diff --git a/backend/src/plugins/LocateUser/LocateUserPlugin.ts b/backend/src/plugins/LocateUser/LocateUserPlugin.ts
index 506380ff..52a9b6fe 100644
--- a/backend/src/plugins/LocateUser/LocateUserPlugin.ts
+++ b/backend/src/plugins/LocateUser/LocateUserPlugin.ts
@@ -72,6 +72,6 @@ export const LocateUserPlugin = zeppelinGuildPlugin<LocateUserPluginType>()({
   },
 
   beforeUnload(pluginData) {
-    pluginData.state.unregisterGuildEventListener();
+    pluginData.state.unregisterGuildEventListener?.();
   },
 });