diff --git a/pkg/volume/csi/csi_mounter.go b/pkg/volume/csi/csi_mounter.go
index 98a60ebcb06..bb31acc7d9f 100644
--- a/pkg/volume/csi/csi_mounter.go
+++ b/pkg/volume/csi/csi_mounter.go
@@ -474,7 +474,7 @@ func makeVolumeHandle(podUID, volSourceSpecName string) string {
 }
 
 func mergeMap(first, second map[string]string) map[string]string {
-	if first == nil && second != nil {
+	if first == nil {
 		return second
 	}
 	for k, v := range second {