diff --git a/manifests/mem.pp b/manifests/mem.pp
index 4c05c1b..54a80a5 100644
--- a/manifests/mem.pp
+++ b/manifests/mem.pp
@@ -180,11 +180,11 @@ class midonet::mem(
 
   $mem_login_host                 = "http://${cluster_ip}${mem_api_port}"
   $mem_trace_api_host             = "http://${cluster_ip}${mem_api_port}"
-  $mem_traces_ws_url              = "${$mem_ws}://${cluster_ip}${mem_trace_port}/${mem_trace_namespace}"
+  $mem_traces_ws_url              = "${$mem_ws}${cluster_ip}${mem_trace_port}/${mem_trace_namespace}"
   $mem_api_host                   = "http://${cluster_ip}${mem_api_port}"
-  $mem_analytics_ws_api_url       = "${$mem_ws}://${analytics_ip}${mem_analytics_port}/${mem_analytics_namespace}"
-  $mem_subscriptions_ws_api_url   = "${$mem_ws}://${cluster_ip}${mem_subscription_port}/subscription"
-  $mem_fabric_ws_api_url          = "${$mem_ws}://${cluster_ip}${mem_fabric_port}/fabric"
+  $mem_analytics_ws_api_url       = "${$mem_ws}${analytics_ip}${mem_analytics_port}/${mem_analytics_namespace}"
+  $mem_subscriptions_ws_api_url   = "${$mem_ws}${cluster_ip}${mem_subscription_port}/subscription"
+  $mem_fabric_ws_api_url          = "${$mem_ws}${cluster_ip}${mem_fabric_port}/fabric"
   $mem_apache_servername          = $cluster_ip