diff --git a/python/paddle/trainer_config_helpers/tests/configs/run_tests.sh b/python/paddle/trainer_config_helpers/tests/configs/run_tests.sh
index f05fc46cd55207149b0b8511881eb02b1150c000..968328835842667470467830c7ca59e4b9fa723d 100755
--- a/python/paddle/trainer_config_helpers/tests/configs/run_tests.sh
+++ b/python/paddle/trainer_config_helpers/tests/configs/run_tests.sh
@@ -13,5 +13,5 @@ for file in $files
 do
     base_protostr=$protostr/$file
     new_protostr=$protostr/$file.unitest
-    diff $base_protostr $new_protostr
+    diff $base_protostr $new_protostr -u
 done