diff --git a/src/components/Tab1.tsx b/src/components/Tab1.tsx
index 3ae73f7..edcb4b8 100644
--- a/src/components/Tab1.tsx
+++ b/src/components/Tab1.tsx
@@ -6,7 +6,7 @@ import googlecode from "react-syntax-highlighter/styles/hljs/googlecode";
 let exampleText = `
 void Main()
 {
-	var next5Friday13 = DateTime.Today
+	let next5Friday13 = DateTime.Today
 	.Recurse(a=>a.AddDays(1))
 	.Where(a=>a.Day == 13 && a.DayOfWeek == DayOfWeek.Friday).Take(5);
 	
@@ -15,7 +15,7 @@ public static class Extension
 {
 	public static IEnumerable<T> Recurse<T>(this T obj, Func<T,T> action)
 	{
-		var local = obj;
+		let local = obj;
 		while(true)
 		{
 		  local = action(local);
diff --git a/src/components/TabNav.tsx b/src/components/TabNav.tsx
index 2f485ba..7968bae 100644
--- a/src/components/TabNav.tsx
+++ b/src/components/TabNav.tsx
@@ -22,8 +22,8 @@ export class TabNav extends React.Component<any, any> {
     }
   }
   render() {
-    var plzLogin = <h4> Please login, yo</h4>
-    var editor = <Edit docId={"awesome"} />
+    let plzLogin = <h4> Please login, yo</h4>
+    let editor = <Edit docId={"awesome"} />
     return (
       <div>
         <Nav tabs className="ml-auto">
diff --git a/src/containers/Edit.tsx b/src/containers/Edit.tsx
index ba7d8ab..6a91592 100644
--- a/src/containers/Edit.tsx
+++ b/src/containers/Edit.tsx
@@ -30,7 +30,7 @@ export class edit extends React.Component<EditProps, EditState>{
         if(!this.props.appState.login.isLoggedIn){
             return;
         }
-        var docId = '';
+        let docId = '';
         if(this.props && this.props.docId && this.props.docId.length > 0){
             docId = this.props.docId;
         }
@@ -48,9 +48,9 @@ export class edit extends React.Component<EditProps, EditState>{
         fbData.rebase.removeBinding(this.ref);
     }
     generateDocId(){
-        var str = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
-        var result = '';
-        for (var i = 0; i < 8; i++){
+        let str = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
+        let result = '';
+        for (let i = 0; i < 8; i++){
             result += str.charAt(Math.floor(Math.random()*str.length))
         }
         return result;
@@ -65,7 +65,7 @@ export class edit extends React.Component<EditProps, EditState>{
     }
 
     render(){
-        var textArea = null;
+        let textArea = null;
         if(this.props.appState.login.isLoggedIn){
             textArea = <textarea value={this.state.document.Body} onChange={(event)=>this.updateDocument(event.target.value)}></textarea>
         }
diff --git a/src/containers/Login.tsx b/src/containers/Login.tsx
index d757b14..4e9f8f9 100644
--- a/src/containers/Login.tsx
+++ b/src/containers/Login.tsx
@@ -44,7 +44,7 @@ class loginContainer extends React.Component<ILoginProps,{}>{
         
     }
     login(){
-        var provider = new firebase.auth.GoogleAuthProvider();
+        let provider = new firebase.auth.GoogleAuthProvider();
         firebase.auth().signInWithPopup(provider).then(result => {});
     }
     render(){
diff --git a/src/startup/firebase.ts b/src/startup/firebase.ts
index 1f557dd..0e2741a 100644
--- a/src/startup/firebase.ts
+++ b/src/startup/firebase.ts
@@ -1,7 +1,7 @@
 import * as firebase from "firebase"
 import * as Rebase from "re-base"
 
-var config = {
+let config = {
   apiKey: "AIzaSyBi1oHDSe7juSTOZws30RkyXgv9u9ey-HA",
   authDomain: "minbin-784f1.firebaseapp.com",
   databaseURL: "https://minbin-784f1.firebaseio.com",
@@ -9,6 +9,6 @@ var config = {
   storageBucket: "minbin-784f1.appspot.com",
   messagingSenderId: "437102882585"
 };
-var app = firebase.initializeApp(config);
-var db = firebase.database(app);
+let app = firebase.initializeApp(config);
+let db = firebase.database(app);
 export default {db:firebase.database(app), rebase:  Rebase.createClass(db)}
\ No newline at end of file