diff --git a/warden3/warden_server/warden_server.py b/warden3/warden_server/warden_server.py
index 4f3cdb9074d2583db45fe9eb743f8118915d9e7c..5b4c01cb2e8124eb222a5d9ee969f559e3d7fb4f 100755
--- a/warden3/warden_server/warden_server.py
+++ b/warden3/warden_server/warden_server.py
@@ -713,7 +713,7 @@ class MySQL(ObjectReq):
 
 
     def getLastReceivedId(self, client):
-        row = self.query("SELECT event_id as id FROM last_events WHERE client_id = %s ORDER BY last_events.id DESC LIMIT 1", client.id)[0]
+        row = self.query("SELECT event_id as id FROM last_events WHERE client_id = %s ORDER BY last_events.id DESC LIMIT 1", (client.id,))[0]
 
         id = row['id'] if row is not None else 0
         logging.debug("getLastReceivedId: id %i for client %i(%s)" % (id, client.id, client.hostname))