diff --git a/python/paddle/fluid/tests/unittests/CMakeLists.txt b/python/paddle/fluid/tests/unittests/CMakeLists.txt
index b2885a0b7be85bf6433f63ccc16d17d7cc4ed69d..f8dbc4dd52b47010114c02f3cb38e2bf0d273a62 100644
--- a/python/paddle/fluid/tests/unittests/CMakeLists.txt
+++ b/python/paddle/fluid/tests/unittests/CMakeLists.txt
@@ -357,7 +357,7 @@ list(REMOVE_ITEM TEST_OPS test_fuse_bn_add_act_pass)
 list(REMOVE_ITEM TEST_OPS test_imperative_static_runner_mnist)
 list(REMOVE_ITEM TEST_OPS test_imperative_static_runner_while)
 # disable test_cumsum_op temporaily
-list(REMOVE_ITEM TEST_OPS test_cumsum_op)
+# list(REMOVE_ITEM TEST_OPS test_cumsum_op)
 
 # disable this unittest temporarily
 list(REMOVE_ITEM TEST_OPS test_imperative_data_loader_exception)