diff --git a/OpenSim/Region/Communications/OGS1/OGS1UserServices.cs b/OpenSim/Region/Communications/OGS1/OGS1UserServices.cs
index bb74e22afb..43b39395b7 100644
--- a/OpenSim/Region/Communications/OGS1/OGS1UserServices.cs
+++ b/OpenSim/Region/Communications/OGS1/OGS1UserServices.cs
@@ -258,10 +258,12 @@ namespace OpenSim.Region.Communications.OGS1
         public UserProfileData SetupMasterUser(LLUUID uuid)
         {
             UserProfileData data = GetUserProfile(uuid);
+            
             if (data == null)
             {
-                throw new Exception("[OGS1 USER SERVICES]: Unknown master user UUID");
+                throw new Exception("[OGS1 USER SERVICES]: Unknown master user " + uuid);
             }
+            
             return data;
         }