diff --git a/internal/controller/bootstrap/init.go b/internal/controller/bootstrap/init.go
index 0ebe7e1c4..8609f62e4 100644
--- a/internal/controller/bootstrap/init.go
+++ b/internal/controller/bootstrap/init.go
@@ -2662,7 +2662,7 @@ func (b *Bootstrap) getPostgresImageConfigMap(ctx context.Context) (*corev1.Conf
 	configMap := &corev1.ConfigMap{}
 	configMapName := constant.PostgreSQLImageConfigMap
 
-	if err := b.Client.Get(ctx, types.NamespacedName{
+	if err := b.Reader.Get(ctx, types.NamespacedName{
 		Name:      configMapName,
 		Namespace: b.CSData.OperatorNs,
 	}, configMap); err != nil && errors.IsNotFound(err) {