diff --git a/python/paddle/v2/fluid/__init__.py b/python/paddle/v2/fluid/__init__.py
index c72b5730695dbc4f772015f1fb8dec6814cd1837..225b41c5043b5792abb90bbad53cbbfce9a3156e 100644
--- a/python/paddle/v2/fluid/__init__.py
+++ b/python/paddle/v2/fluid/__init__.py
@@ -36,7 +36,7 @@ def __read_gflags_from_env__():
     """
     import sys
     import core
-    read_env_flags = ['use_pinned_memory']
+    read_env_flags = ['use_pinned_memory', 'check_nan_inf']
     if core.is_compile_gpu():
         read_env_flags.append('fraction_of_gpu_memory_to_use')
     core.init_gflags([sys.argv[0]] +