diff --git a/test/extended/builds/run_policy.go b/test/extended/builds/run_policy.go
index d96d26331a40..fb66b8f0f5aa 100644
--- a/test/extended/builds/run_policy.go
+++ b/test/extended/builds/run_policy.go
@@ -16,7 +16,8 @@ import (
 	exutil "github.com/openshift/origin/test/extended/util"
 )
 
-var _ = g.Describe("[builds][Slow] using build configuration runPolicy", func() {
+// this test is very latency sensitive so run it by itself (serially).
+var _ = g.Describe("[builds][Slow][Serial] using build configuration runPolicy", func() {
 	defer g.GinkgoRecover()
 	var (
 		// Use invalid source here as we don't care about the result