diff --git a/client/components/App.vue b/client/components/App.vue
index 09841cde..18a10134 100644
--- a/client/components/App.vue
+++ b/client/components/App.vue
@@ -70,7 +70,7 @@ export default {
 			return tommorow - today;
 		},
 		prepareOpenStates() {
-			const viewportWidth = window.outerWidth;
+			const viewportWidth = window.innerWidth;
 			let isUserlistOpen = storage.get("thelounge.state.userlist");
 
 			if (viewportWidth > constants.mobileViewportPixels) {
diff --git a/client/js/vue.js b/client/js/vue.js
index 7f024ec7..f27b52da 100644
--- a/client/js/vue.js
+++ b/client/js/vue.js
@@ -69,7 +69,7 @@ const vueApp = new Vue({
 store.watch(
 	(state) => state.sidebarOpen,
 	(sidebarOpen) => {
-		if (window.outerWidth > constants.mobileViewportPixels) {
+		if (window.innerWidth > constants.mobileViewportPixels) {
 			storage.set("thelounge.state.sidebar", sidebarOpen);
 			vueApp.$emit("resize");
 		}