diff --git a/OpenSim/Data/MySQL/MySQLGridUserData.cs b/OpenSim/Data/MySQL/MySQLGridUserData.cs
index df1ecc6a8e..f476fd26df 100644
--- a/OpenSim/Data/MySQL/MySQLGridUserData.cs
+++ b/OpenSim/Data/MySQL/MySQLGridUserData.cs
@@ -58,7 +58,7 @@ namespace OpenSim.Data.MySQL
 
         public GridUserData[] GetAll(string userID)
         {
-            return base.Get("UserID LIKE {0}%", userID);
+            return base.Get(String.Format("UserID LIKE {0}%", userID));
         }
     }
 }
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