diff --git a/core/src/com/cloud/agent/resource/virtualnetwork/VirtualRoutingResource.java b/core/src/com/cloud/agent/resource/virtualnetwork/VirtualRoutingResource.java
index 0fc6dd161bb..b18e52f95fa 100755
--- a/core/src/com/cloud/agent/resource/virtualnetwork/VirtualRoutingResource.java
+++ b/core/src/com/cloud/agent/resource/virtualnetwork/VirtualRoutingResource.java
@@ -668,7 +668,7 @@ public class VirtualRoutingResource implements Manager {
         }
         
         final String result = routerProxy("checkbatchs2svpn.sh", routerIP, args);
-        if (result != null) {
+        if (result == null || result.isEmpty()) {
             return new CheckS2SVpnConnectionsAnswer(cmd, false, "CheckS2SVpnConneciontsCommand failed");
         }
         return new CheckS2SVpnConnectionsAnswer(cmd, true, result);