diff --git a/server/src/com/cloud/network/NetworkManagerImpl.java b/server/src/com/cloud/network/NetworkManagerImpl.java
index f6e8940eb75..86d8b269347 100755
--- a/server/src/com/cloud/network/NetworkManagerImpl.java
+++ b/server/src/com/cloud/network/NetworkManagerImpl.java
@@ -2319,7 +2319,7 @@ public class NetworkManagerImpl implements NetworkManager, NetworkService, Manag
         }
 
         if (cidr != null && networkOfferingIsConfiguredForExternalNetworking(networkOfferingId)) {
-            throw new InvalidParameterValueException("Cannot specify CIDR when using network offering with external firewall!");
+            throw new InvalidParameterValueException("Cannot specify CIDR when using network offering with external devices!");
         }
 
         if (cidr != null) {