diff --git a/lib/core/agent.py b/lib/core/agent.py
index f9b72b397..57ff0edac 100644
--- a/lib/core/agent.py
+++ b/lib/core/agent.py
@@ -680,10 +680,15 @@ class Agent(object):
         stopLimit = None
         limitCond = True
 
-        limitRegExp = re.search(queries[Backend.getIdentifiedDbms()].limitregexp.query, expression, re.I)
-        limitRegExp2 = re.search(queries[Backend.getIdentifiedDbms()].limitregexp.query2, expression, re.I)
         topLimit = re.search("TOP\s+([\d]+)\s+", expression, re.I)
 
+        limitRegExp = re.search(queries[Backend.getIdentifiedDbms()].limitregexp.query, expression, re.I)
+
+        if hasattr(queries[Backend.getIdentifiedDbms()].limitregexp, "query2"):
+            limitRegExp2 = re.search(queries[Backend.getIdentifiedDbms()].limitregexp.query2, expression, re.I)
+        else:
+            limitRegExp2 = None
+
         if (limitRegExp or limitRegExp2) or (Backend.getIdentifiedDbms() in (DBMS.MSSQL, DBMS.SYBASE) and topLimit):
             if Backend.getIdentifiedDbms() in (DBMS.MYSQL, DBMS.PGSQL, DBMS.SQLITE):
                 limitGroupStart = queries[Backend.getIdentifiedDbms()].limitgroupstart.query