diff --git a/internal/controller/supervisorconfig/secretgenerator/secretgenerator_test.go b/internal/controller/supervisorconfig/secretgenerator/secretgenerator_test.go
index f1e5a3de..884e2049 100644
--- a/internal/controller/supervisorconfig/secretgenerator/secretgenerator_test.go
+++ b/internal/controller/supervisorconfig/secretgenerator/secretgenerator_test.go
@@ -226,6 +226,9 @@ func TestController(t *testing.T) {
 		},
 		{
 			name: "when generating the secret fails, we return an error",
+			storedSecret: func(secret **corev1.Secret) {
+				*secret = nil
+			},
 			generateKey: func() ([]byte, error) {
 				return nil, errors.New("some generate error")
 			},