diff --git a/pkg/server/testing/fake_execution_client.go b/pkg/server/testing/fake_execution_client.go
index 6a00127c4..4e083cf4e 100644
--- a/pkg/server/testing/fake_execution_client.go
+++ b/pkg/server/testing/fake_execution_client.go
@@ -89,6 +89,7 @@ func (f *FakeExecutionClient) Stop() {
 	for _, client := range f.eventClients {
 		close(client.Events)
 	}
+	f.eventClients = nil
 }
 
 // WithEvents setup events publisher for FakeExecutionClient