diff --git a/packages/angular/src/errorhandler.ts b/packages/angular/src/errorhandler.ts
index b23b352db170..14ca380ea3ea 100644
--- a/packages/angular/src/errorhandler.ts
+++ b/packages/angular/src/errorhandler.ts
@@ -85,7 +85,7 @@ class SentryErrorHandler implements AngularErrorHandler, OnDestroy {
   protected readonly _options: ErrorHandlerOptions;
 
   /** The cleanup function is executed when the injector is destroyed. */
-  private _removeAfterSendEventListener?: VoidFunction;
+  private _removeAfterSendEventListener?: () => void;
 
   public constructor(@Inject('errorHandlerOptions') options?: ErrorHandlerOptions) {
     this._options = {
@@ -130,7 +130,7 @@ class SentryErrorHandler implements AngularErrorHandler, OnDestroy {
         this._removeAfterSendEventListener = client.on('afterSendEvent', (event: Event) => {
           if (!event.type && event.event_id) {
             runOutsideAngular(() => {
-              Sentry.showReportDialog({ ...this._options.dialogOptions, eventId: event.event_id! });
+              Sentry.showReportDialog({ ...this._options.dialogOptions, eventId: event.event_id });
             });
           }
         });
diff --git a/packages/angular/test/errorhandler.test.ts b/packages/angular/test/errorhandler.test.ts
index c30a7a87efc9..1ae415c5706d 100644
--- a/packages/angular/test/errorhandler.test.ts
+++ b/packages/angular/test/errorhandler.test.ts
@@ -546,5 +546,49 @@ describe('SentryErrorHandler', () => {
         expect(showReportDialogSpy).toBeCalledTimes(1);
       });
     });
+
+    it('only registers the client "afterSendEvent" listener to open the dialog once', () => {
+      const unsubScribeSpy = vi.fn();
+      const client = {
+        cbs: [] as ((event: Event) => void)[],
+        on: vi.fn((_, cb) => {
+          client.cbs.push(cb);
+          return unsubScribeSpy;
+        }),
+      };
+
+      vi.spyOn(SentryBrowser, 'getClient').mockImplementation(() => client as unknown as Client);
+
+      const errorhandler = createErrorHandler({ showDialog: true });
+      expect(client.cbs).toHaveLength(0);
+
+      errorhandler.handleError(new Error('error 1'));
+      expect(client.cbs).toHaveLength(1);
+
+      errorhandler.handleError(new Error('error 2'));
+      errorhandler.handleError(new Error('error 3'));
+      expect(client.cbs).toHaveLength(1);
+    });
+
+    it('cleans up the "afterSendEvent" listener once the ErrorHandler is destroyed', () => {
+      const unsubScribeSpy = vi.fn();
+      const client = {
+        cbs: [] as ((event: Event) => void)[],
+        on: vi.fn((_, cb) => {
+          client.cbs.push(cb);
+          return unsubScribeSpy;
+        }),
+      };
+
+      vi.spyOn(SentryBrowser, 'getClient').mockImplementation(() => client as unknown as Client);
+
+      const errorhandler = createErrorHandler({ showDialog: true });
+
+      errorhandler.handleError(new Error('error 1'));
+      expect(client.cbs).toHaveLength(1);
+
+      errorhandler.ngOnDestroy();
+      expect(unsubScribeSpy).toHaveBeenCalledTimes(1);
+    });
   });
 });