diff --git a/python/paddle/fluid/tests/unittests/CMakeLists.txt b/python/paddle/fluid/tests/unittests/CMakeLists.txt
index 4b26bacce968a6da72e9aa043adb38918b293a35..534411219b500723f3799a08fdf1b7796534376b 100644
--- a/python/paddle/fluid/tests/unittests/CMakeLists.txt
+++ b/python/paddle/fluid/tests/unittests/CMakeLists.txt
@@ -109,11 +109,12 @@ set_tests_properties(test_parallel_executor_fetch_feed PROPERTIES TIMEOUT 450)
 py_test_modules(test_parallel_executor_transformer MODULES test_parallel_executor_transformer SERIAL)
 if(NOT APPLE)
     py_test_modules(test_image_classification_resnet MODULES test_image_classification_resnet SERIAL)
+    if(CMAKE_BUILD_TYPE STREQUAL "Debug")
+        # change the timeout from 600 to 1200, because in debug mode, this test need more time.
+        set_tests_properties(test_image_classification_resnet PROPERTIES TIMEOUT 1200)
+    endif()
 endif()
-if(CMAKE_BUILD_TYPE STREQUAL "Debug")
-    # change the timeout from 600 to 900, because in debug mode, this test need more time.
-    set_tests_properties(test_image_classification_resnet PROPERTIES TIMEOUT 900)
-endif()
+
 
 if (WITH_NGRAPH)
     add_subdirectory(ngraph)