diff --git a/pkg/volume/iscsi/iscsi.go b/pkg/volume/iscsi/iscsi.go
index 9c75334348a..492f9175bfc 100644
--- a/pkg/volume/iscsi/iscsi.go
+++ b/pkg/volume/iscsi/iscsi.go
@@ -95,10 +95,7 @@ func (plugin *iscsiPlugin) newBuilderInternal(spec *volume.Spec, podUID types.UI
 	}
 
 	lun := strconv.Itoa(iscsi.Lun)
-	portal := iscsi.TargetPortal
-	if !strings.Contains(portal, ":") {
-		portal = iscsi.TargetPortal + ":3260"
-	}
+	portal := portalBuilder(iscsi.TargetPortal)
 
 	return &iscsiDiskBuilder{
 		iscsiDisk: &iscsiDisk{
@@ -193,3 +190,10 @@ func (c *iscsiDiskCleaner) TearDown() error {
 func (c *iscsiDiskCleaner) TearDownAt(dir string) error {
 	return diskTearDown(c.manager, *c, dir, c.mounter)
 }
+
+func portalBuilder(portal string) string {
+	if !strings.Contains(portal, ":") {
+		portal = portal + ":3260"
+	}
+	return portal
+}
diff --git a/pkg/volume/iscsi/iscsi_test.go b/pkg/volume/iscsi/iscsi_test.go
index 9ee8eef9769..2025d922c75 100644
--- a/pkg/volume/iscsi/iscsi_test.go
+++ b/pkg/volume/iscsi/iscsi_test.go
@@ -250,3 +250,12 @@ func TestPersistentClaimReadOnlyFlag(t *testing.T) {
 		t.Errorf("Expected true for builder.IsReadOnly")
 	}
 }
+
+func TestPortalBuilder(t *testing.T) {
+	if portal := portalBuilder("127.0.0.1"); portal != "127.0.0.1:3260" {
+		t.Errorf("wrong portal: %s", portal)
+	}
+	if portal := portalBuilder("127.0.0.1:3260"); portal != "127.0.0.1:3260" {
+		t.Errorf("wrong portal: %s", portal)
+	}
+}