diff --git a/data/theme/gnome-shell-sass/_common.scss b/data/theme/gnome-shell-sass/_common.scss
index cba7914c8..3eb95331d 100644
--- a/data/theme/gnome-shell-sass/_common.scss
+++ b/data/theme/gnome-shell-sass/_common.scss
@@ -1096,6 +1096,11 @@ StScrollBar {
     .label-shadow { color: transparent; }
   }
 
+  .app-menu,
+  .app-well-menu {
+    max-width: 27.25em;
+  }
+
   .aggregate-menu {
     min-width: 21em;
     .popup-menu-icon { padding: 0 4px; }
diff --git a/js/ui/panel.js b/js/ui/panel.js
index fb846fc62..1a8d88131 100644
--- a/js/ui/panel.js
+++ b/js/ui/panel.js
@@ -78,6 +78,8 @@ class AppMenu extends PopupMenu.PopupMenu {
     constructor(sourceActor) {
         super(sourceActor, 0.0, St.Side.TOP);
 
+        this.actor.add_style_class_name('app-menu');
+
         this._app = null;
         this._appSystem = Shell.AppSystem.get_default();