diff --git a/MySQLdb/cursors.py b/MySQLdb/cursors.py
index 9ebf0a1..d5f3828 100644
--- a/MySQLdb/cursors.py
+++ b/MySQLdb/cursors.py
@@ -28,7 +28,7 @@ else:
 RE_INSERT_VALUES = re.compile(
     r"\s*((?:INSERT|REPLACE)\s.+\sVALUES?\s+)" +
     r"(\(\s*(?:%s|%\(.+\)s)\s*(?:,\s*(?:%s|%\(.+\)s)\s*)*\))" +
-    r"(\s*(?:ON DUPLICATE.*)?)\Z",
+    r"(\s*(?:ON DUPLICATE.*)?);?\s*\Z",
     re.IGNORECASE | re.DOTALL)