diff --git a/pkg/kubelet/volumemanager/volume_manager.go b/pkg/kubelet/volumemanager/volume_manager.go
index 7e5d00c6d12..b34f21b62f6 100644
--- a/pkg/kubelet/volumemanager/volume_manager.go
+++ b/pkg/kubelet/volumemanager/volume_manager.go
@@ -504,6 +504,7 @@ func (vm *volumeManager) getUnattachedVolumes(uniquePodName types.UniquePodName)
 			unattachedVolumes = append(unattachedVolumes, volumeToMount.OuterVolumeSpecName)
 		}
 	}
+	sort.Strings(unattachedVolumes)
 
 	return unattachedVolumes
 }
@@ -551,6 +552,8 @@ func filterUnmountedVolumes(mountedVolumes sets.String, expectedVolumes []string
 			unmountedVolumes = append(unmountedVolumes, expectedVolume)
 		}
 	}
+	sort.Strings(unmountedVolumes)
+
 	return unmountedVolumes
 }
 
diff --git a/pkg/kubelet/volumemanager/volume_manager_test.go b/pkg/kubelet/volumemanager/volume_manager_test.go
index cd8b591656f..a17a780e431 100644
--- a/pkg/kubelet/volumemanager/volume_manager_test.go
+++ b/pkg/kubelet/volumemanager/volume_manager_test.go
@@ -164,10 +164,18 @@ func TestWaitForAttachAndMountError(t *testing.T) {
 							Name:      "vol2",
 							MountPath: "/vol2",
 						},
+						{
+							Name:      "vol02",
+							MountPath: "/vol02",
+						},
 						{
 							Name:      "vol3",
 							MountPath: "/vol3",
 						},
+						{
+							Name:      "vol03",
+							MountPath: "/vol03",
+						},
 					},
 				},
 			},
@@ -184,12 +192,24 @@ func TestWaitForAttachAndMountError(t *testing.T) {
 						RBD: &v1.RBDVolumeSource{},
 					},
 				},
+				{
+					Name: "vol02",
+					VolumeSource: v1.VolumeSource{
+						RBD: &v1.RBDVolumeSource{},
+					},
+				},
 				{
 					Name: "vol3",
 					VolumeSource: v1.VolumeSource{
 						AzureDisk: &v1.AzureDiskVolumeSource{},
 					},
 				},
+				{
+					Name: "vol03",
+					VolumeSource: v1.VolumeSource{
+						AzureDisk: &v1.AzureDiskVolumeSource{},
+					},
+				},
 			},
 		},
 	}
@@ -208,7 +228,7 @@ func TestWaitForAttachAndMountError(t *testing.T) {
 		t.Errorf("Expected error, got none")
 	}
 	if !strings.Contains(err.Error(),
-		"unattached volumes=[vol2], failed to process volumes=[vol3]") {
+		"unattached volumes=[vol02 vol2], failed to process volumes=[vol03 vol3]") {
 		t.Errorf("Unexpected error info: %v", err)
 	}
 }