diff --git a/django/db/models/base.py b/django/db/models/base.py
index eced22ab43..8b021978ed 100644
--- a/django/db/models/base.py
+++ b/django/db/models/base.py
@@ -213,7 +213,7 @@ class Model(object):
         record_exists = True
         if pk_set:
             # Determine whether a record with the primary key already exists.
-            cursor.execute("SELECT 1 FROM %s WHERE %s=%%s LIMIT 1" % \
+            cursor.execute("SELECT 1 FROM %s WHERE %s=%%s" % \
                 (backend.quote_name(self._meta.db_table), backend.quote_name(self._meta.pk.column)),
                 self._meta.pk.get_db_prep_lookup('exact', pk_val))
             # If it does already exist, do an UPDATE.