diff --git a/http/transport_test.go b/http/transport_test.go
index c214cb37..518d3869 100644
--- a/http/transport_test.go
+++ b/http/transport_test.go
@@ -17,7 +17,7 @@ import (
 	fnhttp "knative.dev/kn-plugin-func/http"
 )
 
-const inClusterHostName = "image-registry.openshift-image-registry.svc"
+const inClusterHostName = "a-testing-service.a-testing-namespace.svc"
 
 func TestCustomCA(t *testing.T) {
 	var err error