diff --git a/web/src/popover_menus.js b/web/src/popover_menus.js
index 1a8a944fc0..b80d1dca5a 100644
--- a/web/src/popover_menus.js
+++ b/web/src/popover_menus.js
@@ -556,7 +556,7 @@ export function initialize() {
             // Destroy instance so that event handlers
             // are destroyed too.
             instance.destroy();
-            popover_instances.compose_control_button = undefined;
+            popover_instances.compose_mobile_button = undefined;
         },
     });