diff --git a/packages/app/src/plugins/composer-items/model.test.ts b/packages/app/src/plugins/composer-items/model.test.ts
index e75585e36f..8a79e57d8c 100644
--- a/packages/app/src/plugins/composer-items/model.test.ts
+++ b/packages/app/src/plugins/composer-items/model.test.ts
@@ -20,6 +20,9 @@ function installed(): InstalledPlugin {
     queryClient: new QueryClient(),
     paseo: {} as InstalledPlugin["paseo"],
     invoke: async () => undefined,
+    subscribe: () => {
+      throw new Error("Subscriptions are not used here");
+    },
     cleanup: () => {},
     settingsScreens: [],
     surfaces: [],