diff --git a/packages/backend-app-api/src/wiring/BackendInitializer.ts b/packages/backend-app-api/src/wiring/BackendInitializer.ts
index 834c025e35..6b020bb5ac 100644
--- a/packages/backend-app-api/src/wiring/BackendInitializer.ts
+++ b/packages/backend-app-api/src/wiring/BackendInitializer.ts
@@ -373,7 +373,7 @@ export class BackendInitializer {
 
   // It's fine to call .stop() multiple times, which for example can happen with manual stop + process exit
   async stop(): Promise<void> {
-    instanceRegistry.register(this);
+    instanceRegistry.unregister(this);
 
     if (!this.#stopPromise) {
       this.#stopPromise = this.#doStop();