diff --git a/Lib/test/test_builtin.py b/Lib/test/test_builtin.py
index f7cf811..72b6966 100644
--- a/Lib/test/test_builtin.py
+++ b/Lib/test/test_builtin.py
@@ -729,6 +729,11 @@
         self.assertRaises(ValueError, int, '123\0')
         self.assertRaises(ValueError, int, '53', 40)
 
+        # SF bug 1545497: embedded NULs were not detected with
+        # explicit base
+        self.assertRaises(ValueError, int, '123\0', 10)
+        self.assertRaises(ValueError, int, '123\x00 245', 20)
+
         x = int('1' * 600)
         self.assert_(isinstance(x, long))