diff --git a/src/Lifecycle.js b/src/Lifecycle.js
index 59580e7cb6..424c58249c 100644
--- a/src/Lifecycle.js
+++ b/src/Lifecycle.js
@@ -156,7 +156,7 @@ export function attemptTokenLogin(queryParams, defaultDeviceDisplayName) {
 }
 
 function _registerAsGuest(hsUrl, isUrl, defaultDeviceDisplayName) {
-    console.log("Doing guest login on %s", hsUrl);
+    console.log(`Doing guest login on ${hsUrl}`);
 
     // TODO: we should probably de-duplicate this and Login.loginAsGuest.
     // Not really sure where the right home for it is.
@@ -171,7 +171,7 @@ function _registerAsGuest(hsUrl, isUrl, defaultDeviceDisplayName) {
             initial_device_display_name: defaultDeviceDisplayName,
         },
     }).then((creds) => {
-        console.log("Registered as guest: %s", creds.user_id);
+        console.log(`Registered as guest: ${creds.user_id}`);
         return _doSetLoggedIn({
             userId: creds.user_id,
             deviceId: creds.device_id,
@@ -215,7 +215,7 @@ function _restoreFromLocalStorage() {
     }
 
     if (accessToken && userId && hsUrl) {
-        console.log("Restoring session for %s", userId);
+        console.log(`Restoring session for ${userId}`);
         try {
             return _doSetLoggedIn({
                 userId: userId,
@@ -315,10 +315,10 @@ async function _doSetLoggedIn(credentials, clearStorage) {
     credentials.guest = Boolean(credentials.guest);
 
     console.log(
-        "setLoggedIn: mxid:", credentials.userId,
-        "deviceId:", credentials.deviceId,
-        "guest:", credentials.guest,
-        "hs:", credentials.homeserverUrl,
+        "setLoggedIn: mxid: " + credentials.userId +
+        " deviceId: " + credentials.deviceId +
+        " guest: " + credentials.guest +
+        " hs: " + credentials.homeserverUrl,
     );
 
     // This is dispatched to indicate that the user is still in the process of logging in
@@ -395,7 +395,7 @@ function _persistCredentialsToLocalStorage(credentials) {
         localStorage.setItem("mx_device_id", credentials.deviceId);
     }
 
-    console.log("Session persisted for %s", credentials.userId);
+    console.log(`Session persisted for ${credentials.userId}`);
 }
 
 /**
diff --git a/src/MatrixClientPeg.js b/src/MatrixClientPeg.js
index 47370e2142..03716be2da 100644
--- a/src/MatrixClientPeg.js
+++ b/src/MatrixClientPeg.js
@@ -84,7 +84,9 @@ class MatrixClientPeg {
 
         let promise = this.matrixClient.store.startup();
         // log any errors when starting up the database (if one exists)
-        promise.catch((err) => { console.error(err); });
+        promise.catch((err) => {
+            console.error(`Error starting matrixclient store: ${err}`);
+        });
 
         // regardless of errors, start the client. If we did error out, we'll
         // just end up doing a full initial /sync.
diff --git a/src/components/structures/MatrixChat.js b/src/components/structures/MatrixChat.js
index 17df3172df..2bb9476701 100644
--- a/src/components/structures/MatrixChat.js
+++ b/src/components/structures/MatrixChat.js
@@ -330,7 +330,7 @@ module.exports = React.createClass({
                     defaultDeviceDisplayName: this.props.defaultDeviceDisplayName,
                 });
             }).catch((e) => {
-                console.error("Unable to load session", e);
+                console.error(`Error attempting to load session from token params: ${e}`);
                 return false;
             }).then((loadedSession) => {
                 if (!loadedSession) {
diff --git a/src/components/views/dialogs/ChatInviteDialog.js b/src/components/views/dialogs/ChatInviteDialog.js
index 9a14cb91d3..a85efadef7 100644
--- a/src/components/views/dialogs/ChatInviteDialog.js
+++ b/src/components/views/dialogs/ChatInviteDialog.js
@@ -178,7 +178,7 @@ module.exports = React.createClass({
     },
 
     onQueryChanged: function(ev) {
-        const query = ev.target.value.toLowerCase();
+        const query = ev.target.value;
         if (this.queryChangedDebouncer) {
             clearTimeout(this.queryChangedDebouncer);
         }
@@ -271,10 +271,11 @@ module.exports = React.createClass({
             query,
             searchError: null,
         });
+        const queryLowercase = query.toLowerCase();
         const results = [];
         MatrixClientPeg.get().getUsers().forEach((user) => {
-            if (user.userId.toLowerCase().indexOf(query) === -1 &&
-                user.displayName.toLowerCase().indexOf(query) === -1
+            if (user.userId.toLowerCase().indexOf(queryLowercase) === -1 &&
+                user.displayName.toLowerCase().indexOf(queryLowercase) === -1
             ) {
                 return;
             }