diff --git a/python/paddle/fluid/trainer.py b/python/paddle/fluid/trainer.py
index 22f0ba915a022b29047cbc996f07c97a1003fd94..64049a93cb0a267722de9cd94961b6256551330d 100644
--- a/python/paddle/fluid/trainer.py
+++ b/python/paddle/fluid/trainer.py
@@ -279,7 +279,7 @@ class Trainer(object):
             exe = executor.Executor(place)
             exe.run(self.startup_program)
 
-        if self.checkpoint_cfg and self.checkpoint_cfg.load_serial:
+        if self.checkpoint_cfg and self.checkpoint_cfg.load_serial is not None:
             self._load_checkpoint()
 
         if param_path and os.path.isdir(param_path):