diff --git a/test/extended/images/hardprune.go b/test/extended/images/hardprune.go
index 1e66e19c625b..581f10965600 100644
--- a/test/extended/images/hardprune.go
+++ b/test/extended/images/hardprune.go
@@ -17,7 +17,7 @@ import (
 	testutil "github.com/openshift/origin/test/util"
 )
 
-var _ = g.Describe("[Feature:ImagePrune] Image hard prune", func() {
+var _ = g.Describe("[Feature:ImagePrune][Serial] Image hard prune", func() {
 	defer g.GinkgoRecover()
 	var oc = exutil.NewCLI("prune-images", exutil.KubeConfigPath())
 	var originalAcceptSchema2 *bool
diff --git a/test/extended/images/helper.go b/test/extended/images/helper.go
index 11a3c3ca9d54..33fb2acd9ab2 100644
--- a/test/extended/images/helper.go
+++ b/test/extended/images/helper.go
@@ -775,6 +775,13 @@ func (c *CleanUpContainer) Run() {
 		}
 	}
 
+	out, err := c.OC.SetNamespace(metav1.NamespaceDefault).AsAdmin().
+		Run("rsh").Args("dc/docker-registry", "find", "/registry", "-mindepth", "1", "-delete").Output()
+	if err != nil {
+		fmt.Fprintf(g.GinkgoWriter, "clean up registry failed: %v\n", err)
+		fmt.Fprintf(g.GinkgoWriter, "%s\n", out)
+	}
+
 	if len(c.imageIDs) == 0 {
 		return
 	}
diff --git a/test/extended/images/prune.go b/test/extended/images/prune.go
index 79f4f65093ea..2b29713cea33 100644
--- a/test/extended/images/prune.go
+++ b/test/extended/images/prune.go
@@ -28,7 +28,7 @@ const (
 	externalImageReference = "docker.io/openshift/origin-release:golang-1.4"
 )
 
-var _ = g.Describe("[Feature:ImagePrune] Image prune", func() {
+var _ = g.Describe("[Feature:ImagePrune][Serial] Image prune", func() {
 	defer g.GinkgoRecover()
 	var oc = exutil.NewCLI("prune-images", exutil.KubeConfigPath())