diff --git a/web/apps/photos/src/components/Collections/CollectionHeader.tsx b/web/apps/photos/src/components/Collections/CollectionHeader.tsx
index 85266d965f..23cdc010c2 100644
--- a/web/apps/photos/src/components/Collections/CollectionHeader.tsx
+++ b/web/apps/photos/src/components/Collections/CollectionHeader.tsx
@@ -36,8 +36,6 @@ import {
     GalleryItemsSummary,
 } from "ente-new/photos/components/gallery/ListHeader";
 import {
-    ALL_SECTION,
-    HIDDEN_ITEMS_SECTION,
     isHiddenCollection,
     leaveSharedCollection,
     renameCollection,
@@ -45,9 +43,10 @@ import {
     updateCollectionSortOrder,
     updateCollectionVisibility,
 } from "ente-new/photos/services/collection";
-import type {
-    CollectionSummary,
-    CollectionSummaryType,
+import {
+    PseudoCollectionID,
+    type CollectionSummary,
+    type CollectionSummaryType,
 } from "ente-new/photos/services/collection-summary";
 import {
     clearLocalTrash,
@@ -207,12 +206,12 @@ const CollectionOptions: React.FC<CollectionHeaderProps> = ({
 
     const deleteCollectionAlongWithFiles = wrap(async () => {
         await CollectionAPI.deleteCollection(activeCollection.id, false);
-        setActiveCollectionID(ALL_SECTION);
+        setActiveCollectionID(PseudoCollectionID.all);
     });
 
     const deleteCollectionButKeepFiles = wrap(async () => {
         await CollectionAPI.deleteCollection(activeCollection.id, true);
-        setActiveCollectionID(ALL_SECTION);
+        setActiveCollectionID(PseudoCollectionID.all);
     });
 
     const confirmEmptyTrash = () =>
@@ -229,7 +228,7 @@ const CollectionOptions: React.FC<CollectionHeaderProps> = ({
     const doEmptyTrash = wrap(async () => {
         await emptyTrash();
         await clearLocalTrash();
-        setActiveCollectionID(ALL_SECTION);
+        setActiveCollectionID(PseudoCollectionID.all);
     });
 
     const _downloadCollection = () => {
@@ -275,7 +274,7 @@ const CollectionOptions: React.FC<CollectionHeaderProps> = ({
 
     const leaveSharedAlbum = wrap(async () => {
         await leaveSharedCollection(activeCollection.id);
-        setActiveCollectionID(ALL_SECTION);
+        setActiveCollectionID(PseudoCollectionID.all);
     });
 
     const pinAlbum = wrap(() =>
@@ -291,7 +290,7 @@ const CollectionOptions: React.FC<CollectionHeaderProps> = ({
             activeCollection,
             ItemVisibility.hidden,
         );
-        setActiveCollectionID(ALL_SECTION);
+        setActiveCollectionID(PseudoCollectionID.all);
     });
 
     const unhideAlbum = wrap(async () => {
@@ -299,7 +298,7 @@ const CollectionOptions: React.FC<CollectionHeaderProps> = ({
             activeCollection,
             ItemVisibility.visible,
         );
-        setActiveCollectionID(HIDDEN_ITEMS_SECTION);
+        setActiveCollectionID(PseudoCollectionID.hiddenItems);
     });
 
     const changeSortOrderAsc = wrap(() =>
diff --git a/web/apps/photos/src/components/Collections/GalleryBarAndListHeader.tsx b/web/apps/photos/src/components/Collections/GalleryBarAndListHeader.tsx
index ded05c4a61..4bc8c0ae57 100644
--- a/web/apps/photos/src/components/Collections/GalleryBarAndListHeader.tsx
+++ b/web/apps/photos/src/components/Collections/GalleryBarAndListHeader.tsx
@@ -8,11 +8,11 @@ import {
     type GalleryBarImplProps,
 } from "ente-new/photos/components/gallery/BarImpl";
 import { PeopleHeader } from "ente-new/photos/components/gallery/PeopleHeader";
-import { ALL_SECTION } from "ente-new/photos/services/collection";
 import {
     areOnlySystemCollections,
     collectionsSortBy,
     isSystemCollection,
+    PseudoCollectionID,
     shouldShowOnCollectionBar,
     type CollectionsSortBy,
     type CollectionSummaries,
@@ -108,7 +108,7 @@ export const GalleryBarAndListHeader: React.FC<CollectionsProps> = ({
         () =>
             shouldHide ||
             (areOnlySystemCollections(toShowCollectionSummaries) &&
-                activeCollectionID === ALL_SECTION),
+                activeCollectionID === PseudoCollectionID.all),
         [shouldHide, toShowCollectionSummaries, activeCollectionID],
     );
 
diff --git a/web/apps/photos/src/components/pages/gallery/SelectedFileOptions.tsx b/web/apps/photos/src/components/pages/gallery/SelectedFileOptions.tsx
index d5a0f94151..6be0160d18 100644
--- a/web/apps/photos/src/components/pages/gallery/SelectedFileOptions.tsx
+++ b/web/apps/photos/src/components/pages/gallery/SelectedFileOptions.tsx
@@ -17,7 +17,6 @@ import { useBaseContext } from "ente-base/context";
 import type { Collection } from "ente-media/collection";
 import type { CollectionSelectorAttributes } from "ente-new/photos/components/CollectionSelector";
 import type { GalleryBarMode } from "ente-new/photos/components/gallery/reducer";
-import { ALL_SECTION } from "ente-new/photos/services/collection";
 import { PseudoCollectionID } from "ente-new/photos/services/collection-summary";
 import { t } from "i18next";
 import { type CollectionOp } from "utils/collection";
@@ -338,14 +337,14 @@ const SelectedFileOptions = ({
                             </IconButton>
                         </Tooltip>
                     )}
-                    {activeCollectionID === ALL_SECTION && (
+                    {activeCollectionID === PseudoCollectionID.all && (
                         <Tooltip title={t("archive")}>
                             <IconButton onClick={handleFileOp("archive")}>
                                 <ArchiveIcon />
                             </IconButton>
                         </Tooltip>
                     )}
-                    {activeCollectionID !== ALL_SECTION &&
+                    {activeCollectionID !== PseudoCollectionID.all &&
                         activeCollectionID != PseudoCollectionID.archiveItems &&
                         !isFavoriteCollection && (
                             <>
diff --git a/web/apps/photos/src/pages/gallery.tsx b/web/apps/photos/src/pages/gallery.tsx
index a0f71d7277..6576f1ff6a 100644
--- a/web/apps/photos/src/pages/gallery.tsx
+++ b/web/apps/photos/src/pages/gallery.tsx
@@ -71,8 +71,11 @@ import {
 import { useIsOffline } from "ente-new/photos/components/utils/use-is-offline";
 import { usePeopleStateSnapshot } from "ente-new/photos/components/utils/use-snapshot";
 import { shouldShowWhatsNew } from "ente-new/photos/services/changelog";
-import { ALL_SECTION, createAlbum } from "ente-new/photos/services/collection";
-import { areOnlySystemCollections } from "ente-new/photos/services/collection-summary";
+import { createAlbum } from "ente-new/photos/services/collection";
+import {
+    areOnlySystemCollections,
+    PseudoCollectionID,
+} from "ente-new/photos/services/collection-summary";
 import { getAllLocalCollections } from "ente-new/photos/services/collections";
 import exportService from "ente-new/photos/services/export";
 import {
@@ -183,7 +186,7 @@ const Page: React.FC = () => {
         ownCount: 0,
         count: 0,
         collectionID: 0,
-        context: { mode: "albums", collectionID: ALL_SECTION },
+        context: { mode: "albums", collectionID: PseudoCollectionID.all },
     });
     const [blockingLoad, setBlockingLoad] = useState(false);
     const [shouldDisableDropzone, setShouldDisableDropzone] = useState(false);
@@ -375,7 +378,7 @@ const Page: React.FC = () => {
             return;
         }
         let collectionURL = "";
-        if (activeCollectionID !== ALL_SECTION) {
+        if (activeCollectionID !== PseudoCollectionID.all) {
             // TODO: Is this URL param even used?
             collectionURL = `?collection=${activeCollectionID}`;
         }
@@ -1080,7 +1083,7 @@ const Page: React.FC = () => {
                 !isFirstLoad &&
                 !normalFiles?.length &&
                 !hiddenFiles?.length &&
-                activeCollectionID === ALL_SECTION ? (
+                activeCollectionID === PseudoCollectionID.all ? (
                     <GalleryEmptyState
                         isUploadInProgress={uploadManager.isUploadInProgress()}
                         onUpload={openUploader}
diff --git a/web/apps/photos/src/pages/shared-albums.tsx b/web/apps/photos/src/pages/shared-albums.tsx
index 25e3d62684..b879e3eaf7 100644
--- a/web/apps/photos/src/pages/shared-albums.tsx
+++ b/web/apps/photos/src/pages/shared-albums.tsx
@@ -54,10 +54,8 @@ import {
     GalleryItemsHeaderAdapter,
     GalleryItemsSummary,
 } from "ente-new/photos/components/gallery/ListHeader";
-import {
-    ALL_SECTION,
-    isHiddenCollection,
-} from "ente-new/photos/services/collection";
+import { isHiddenCollection } from "ente-new/photos/services/collection";
+import { PseudoCollectionID } from "ente-new/photos/services/collection-summary";
 import { sortFiles } from "ente-new/photos/services/files";
 import { usePhotosAppContext } from "ente-new/photos/types/context";
 import { CustomError, parseSharingErrorCodes } from "ente-shared/error";
@@ -520,7 +518,7 @@ export default function PublicCollectionGallery() {
                     selectable={downloadEnabled}
                     selected={selected}
                     setSelected={setSelected}
-                    activeCollectionID={ALL_SECTION}
+                    activeCollectionID={PseudoCollectionID.all}
                     setFilesDownloadProgressAttributesCreator={
                         setFilesDownloadProgressAttributesCreator
                     }
diff --git a/web/apps/photos/src/utils/collection.ts b/web/apps/photos/src/utils/collection.ts
index 6f8ce1b21b..628cc9f095 100644
--- a/web/apps/photos/src/utils/collection.ts
+++ b/web/apps/photos/src/utils/collection.ts
@@ -9,12 +9,12 @@ import {
     createAlbum,
     defaultHiddenCollectionUserFacingName,
     findDefaultHiddenCollectionIDs,
-    HIDDEN_ITEMS_SECTION,
     isHiddenCollection,
     isIncomingShare,
     moveToCollection,
     restoreToCollection,
 } from "ente-new/photos/services/collection";
+import { PseudoCollectionID } from "ente-new/photos/services/collection-summary";
 import {
     getAllLocalCollections,
     getLocalCollections,
@@ -113,7 +113,7 @@ export async function downloadDefaultHiddenCollectionHelper(
         const setFilesDownloadProgressAttributes =
             setFilesDownloadProgressAttributesCreator(
                 defaultHiddenCollectionUserFacingName,
-                HIDDEN_ITEMS_SECTION,
+                PseudoCollectionID.hiddenItems,
                 true,
             );
 
diff --git a/web/packages/new/photos/components/gallery/reducer.ts b/web/packages/new/photos/components/gallery/reducer.ts
index 8e6c2b48b0..55134f232b 100644
--- a/web/packages/new/photos/components/gallery/reducer.ts
+++ b/web/packages/new/photos/components/gallery/reducer.ts
@@ -16,9 +16,7 @@ import { includes } from "ente-utils/type-guards";
 import { t } from "i18next";
 import React, { useReducer } from "react";
 import {
-    ALL_SECTION,
     findDefaultHiddenCollectionIDs,
-    HIDDEN_ITEMS_SECTION,
     isDefaultHiddenCollection,
     isIncomingShare,
 } from "../../services/collection";
@@ -534,7 +532,7 @@ const galleryReducer: React.Reducer<GalleryState, GalleryAction> = (
             );
             const view = {
                 type: "albums" as const,
-                activeCollectionSummaryID: ALL_SECTION,
+                activeCollectionSummaryID: PseudoCollectionID.all,
                 activeCollection: undefined,
             };
 
@@ -1011,7 +1009,7 @@ const galleryReducer: React.Reducer<GalleryState, GalleryAction> = (
                 pendingSearchSuggestions: [],
                 view: {
                     type: "albums",
-                    activeCollectionSummaryID: ALL_SECTION,
+                    activeCollectionSummaryID: PseudoCollectionID.all,
                     activeCollection: undefined,
                 },
                 isInSearchMode: false,
@@ -1028,7 +1026,7 @@ const galleryReducer: React.Reducer<GalleryState, GalleryAction> = (
                 pendingSearchSuggestions: [],
                 view: {
                     type: "hidden-albums",
-                    activeCollectionSummaryID: HIDDEN_ITEMS_SECTION,
+                    activeCollectionSummaryID: PseudoCollectionID.hiddenItems,
                     activeCollection: undefined,
                 },
                 isInSearchMode: false,
@@ -1073,7 +1071,7 @@ const galleryReducer: React.Reducer<GalleryState, GalleryAction> = (
                             ? "hidden-albums"
                             : "albums",
                     activeCollectionSummaryID:
-                        action.collectionSummaryID ?? ALL_SECTION,
+                        action.collectionSummaryID ?? PseudoCollectionID.all,
                     activeCollection: state.normalCollections
                         .concat(state.hiddenCollections)
                         .find(({ id }) => id === action.collectionSummaryID),
@@ -1292,9 +1290,9 @@ const deriveNormalCollectionSummaries = (
         normalFiles,
         archivedFileIDs,
     );
-    normalCollectionSummaries.set(ALL_SECTION, {
+    normalCollectionSummaries.set(PseudoCollectionID.all, {
         ...pseudoCollectionOptionsForFiles(allSectionFiles),
-        id: ALL_SECTION,
+        id: PseudoCollectionID.all,
         type: "all",
         attributes: ["all"],
         name: t("section_all"),
@@ -1347,9 +1345,9 @@ const deriveHiddenCollectionSummaries = (
     const defaultHiddenFiles = uniqueFilesByID(
         hiddenFiles.filter((file) => dhcIDs.has(file.collectionID)),
     );
-    hiddenCollectionSummaries.set(HIDDEN_ITEMS_SECTION, {
+    hiddenCollectionSummaries.set(PseudoCollectionID.hiddenItems, {
         ...pseudoCollectionOptionsForFiles(defaultHiddenFiles),
-        id: HIDDEN_ITEMS_SECTION,
+        id: PseudoCollectionID.hiddenItems,
         name: t("hidden_items"),
         type: "hiddenItems",
         attributes: ["hiddenItems"],
@@ -1579,7 +1577,8 @@ const deriveAlbumsViewAndSelectedID = (
         selectedCollectionSummaryID: activeCollectionSummaryID,
         view: {
             type: "albums" as const,
-            activeCollectionSummaryID: activeCollectionSummaryID ?? ALL_SECTION,
+            activeCollectionSummaryID:
+                activeCollectionSummaryID ?? PseudoCollectionID.all,
             activeCollection,
         },
     };
@@ -1606,7 +1605,7 @@ const deriveHiddenAlbumsViewAndSelectedID = (
         view: {
             type: "hidden-albums" as const,
             activeCollectionSummaryID:
-                activeCollectionSummaryID ?? HIDDEN_ITEMS_SECTION,
+                activeCollectionSummaryID ?? PseudoCollectionID.hiddenItems,
             activeCollection,
         },
     };
@@ -1859,7 +1858,7 @@ const deriveAlbumsFilteredFiles = (
             return activeCollectionSummaryID === file.collectionID;
         }
 
-        if (activeCollectionSummaryID === ALL_SECTION) {
+        if (activeCollectionSummaryID === PseudoCollectionID.all) {
             // Archived files (whether individually archived, or part of some
             // archived album) should not be shown in "All".
             if (archivedFileIDs.has(file.id)) {
@@ -1890,9 +1889,9 @@ const deriveHiddenAlbumsFilteredFiles = (
     const filteredFiles = hiddenFiles.filter((file) => {
         if (tempDeletedFileIDs.has(file.id)) return false;
 
-        // "Hidden" shows all standalone hidden files.
+        // "Hidden items" shows all individually hidden files.
         if (
-            activeCollectionSummaryID === HIDDEN_ITEMS_SECTION &&
+            activeCollectionSummaryID == PseudoCollectionID.hiddenItems &&
             defaultHiddenCollectionIDs.has(file.collectionID)
         ) {
             return true;
diff --git a/web/packages/new/photos/services/collection-summary.ts b/web/packages/new/photos/services/collection-summary.ts
index 128657f72b..4c4c207e99 100644
--- a/web/packages/new/photos/services/collection-summary.ts
+++ b/web/packages/new/photos/services/collection-summary.ts
@@ -72,9 +72,6 @@ export const PseudoCollectionID = {
     hiddenItems: -4,
 } as const;
 
-export const HIDDEN_ITEMS_SECTION = -4;
-export const ALL_SECTION = 0;
-
 /**
  * A massaged version of a collection or a pseudo-collection suitable for being
  * directly shown in the UI.
diff --git a/web/packages/new/photos/services/collection.ts b/web/packages/new/photos/services/collection.ts
index 77bad86265..7dbca8aacf 100644
--- a/web/packages/new/photos/services/collection.ts
+++ b/web/packages/new/photos/services/collection.ts
@@ -50,9 +50,6 @@ const defaultHiddenCollectionName = ".hidden";
 export const defaultHiddenCollectionUserFacingName = "Hidden";
 const favoritesCollectionName = "Favorites";
 
-export const HIDDEN_ITEMS_SECTION = -4;
-export const ALL_SECTION = 0;
-
 /**
  * Return the "user facing" name of the given collection.
  *