diff --git a/web/packages/base/crypto/index.ts b/web/packages/base/crypto/index.ts
index 4a43b1ba15..386d1ac7da 100644
--- a/web/packages/base/crypto/index.ts
+++ b/web/packages/base/crypto/index.ts
@@ -205,7 +205,9 @@ export const decryptBoxB64 = (box: EncryptedBox, key: BytesOrB64) =>
  * {@link encryptBlobB64}.
  */
 export const decryptBlob = (blob: EncryptedBlob, key: BytesOrB64) =>
-    assertInWorker(ei._decryptBlob(blob, key));
+    inWorker()
+        ? ei._decryptBlob(blob, key)
+        : sharedCryptoWorker().then((w) => w.decryptBlob(blob, key));
 
 /**
  * A variant of {@link decryptBlob} that returns the result as a base64 string.
diff --git a/web/packages/base/crypto/worker.ts b/web/packages/base/crypto/worker.ts
index 26b3e481c6..82f2d47624 100644
--- a/web/packages/base/crypto/worker.ts
+++ b/web/packages/base/crypto/worker.ts
@@ -19,6 +19,7 @@ export class CryptoWorker {
     encryptMetadataJSON = ei._encryptMetadataJSON;
     decryptBox = ei._decryptBox;
     decryptBoxB64 = ei._decryptBoxB64;
+    decryptBlob = ei._decryptBlob;
     decryptBlobB64 = ei._decryptBlobB64;
     decryptThumbnail = ei._decryptThumbnail;
     decryptMetadataJSON_New = ei._decryptMetadataJSON_New;