diff --git a/pkg/volume/aws_pd/aws_pd.go b/pkg/volume/aws_pd/aws_pd.go
index af46665047d..733cc520023 100644
--- a/pkg/volume/aws_pd/aws_pd.go
+++ b/pkg/volume/aws_pd/aws_pd.go
@@ -174,7 +174,7 @@ func (pd *awsElasticBlockStore) SetUp() error {
 // SetUpAt attaches the disk and bind mounts to the volume path.
 func (pd *awsElasticBlockStore) SetUpAt(dir string) error {
 	// TODO: handle failed mounts here.
-	mountpoint, err := mount.IsMountPoint(dir)
+	mountpoint, err := pd.mounter.IsMountPoint(dir)
 	glog.V(4).Infof("PersistentDisk set up: %s %v %v", dir, mountpoint, err)
 	if err != nil && !os.IsNotExist(err) {
 		return err
@@ -202,7 +202,7 @@ func (pd *awsElasticBlockStore) SetUpAt(dir string) error {
 	// Perform a bind mount to the full path to allow duplicate mounts of the same PD.
 	err = pd.mounter.Mount(globalPDPath, dir, "", mount.FlagBind|flags, "")
 	if err != nil {
-		mountpoint, mntErr := mount.IsMountPoint(dir)
+		mountpoint, mntErr := pd.mounter.IsMountPoint(dir)
 		if mntErr != nil {
 			glog.Errorf("isMountpoint check failed: %v", mntErr)
 			return err
@@ -212,7 +212,7 @@ func (pd *awsElasticBlockStore) SetUpAt(dir string) error {
 				glog.Errorf("Failed to unmount: %v", mntErr)
 				return err
 			}
-			mountpoint, mntErr := mount.IsMountPoint(dir)
+			mountpoint, mntErr := pd.mounter.IsMountPoint(dir)
 			if mntErr != nil {
 				glog.Errorf("isMountpoint check failed: %v", mntErr)
 				return err
@@ -271,7 +271,7 @@ func (pd *awsElasticBlockStore) TearDown() error {
 // Unmounts the bind mount, and detaches the disk only if the PD
 // resource was the last reference to that disk on the kubelet.
 func (pd *awsElasticBlockStore) TearDownAt(dir string) error {
-	mountpoint, err := mount.IsMountPoint(dir)
+	mountpoint, err := pd.mounter.IsMountPoint(dir)
 	if err != nil {
 		glog.V(2).Info("Error checking if mountpoint ", dir, ": ", err)
 		return err
@@ -305,7 +305,7 @@ func (pd *awsElasticBlockStore) TearDownAt(dir string) error {
 			return err
 		}
 	}
-	mountpoint, mntErr := mount.IsMountPoint(dir)
+	mountpoint, mntErr := pd.mounter.IsMountPoint(dir)
 	if mntErr != nil {
 		glog.Errorf("isMountpoint check failed: %v", mntErr)
 		return err
diff --git a/pkg/volume/aws_pd/aws_pd_test.go b/pkg/volume/aws_pd/aws_pd_test.go
index 2bf59e471b9..e52558b6f5a 100644
--- a/pkg/volume/aws_pd/aws_pd_test.go
+++ b/pkg/volume/aws_pd/aws_pd_test.go
@@ -111,7 +111,7 @@ func TestPlugin(t *testing.T) {
 		t.Errorf("Failed to make a new Builder: %v", err)
 	}
 	if builder == nil {
-		t.Errorf("Got a nil Builder: %v")
+		t.Errorf("Got a nil Builder")
 	}
 
 	path := builder.GetPath()
@@ -142,7 +142,7 @@ func TestPlugin(t *testing.T) {
 		t.Errorf("Failed to make a new Cleaner: %v", err)
 	}
 	if cleaner == nil {
-		t.Errorf("Got a nil Cleaner: %v")
+		t.Errorf("Got a nil Cleaner")
 	}
 
 	if err := cleaner.TearDown(); err != nil {
diff --git a/pkg/volume/aws_pd/aws_util.go b/pkg/volume/aws_pd/aws_util.go
index 05831a0b718..0b644b6e0be 100644
--- a/pkg/volume/aws_pd/aws_util.go
+++ b/pkg/volume/aws_pd/aws_util.go
@@ -65,7 +65,7 @@ func (util *AWSDiskUtil) AttachAndMountDisk(pd *awsElasticBlockStore, globalPDPa
 	}
 
 	// Only mount the PD globally once.
-	mountpoint, err := mount.IsMountPoint(globalPDPath)
+	mountpoint, err := pd.mounter.IsMountPoint(globalPDPath)
 	if err != nil {
 		if os.IsNotExist(err) {
 			if err := os.MkdirAll(globalPDPath, 0750); err != nil {