diff --git a/tools/get_pr_ut.py b/tools/get_pr_ut.py
index 470242da34ddd..0df3b4914f5df 100644
--- a/tools/get_pr_ut.py
+++ b/tools/get_pr_ut.py
@@ -233,9 +233,9 @@ def is_only_comment(self, f):
 
     def get_all_count(self):
         os.system(
-            "cd %s/build && ctest -N|grep 'Total Tests:' | awk -F ': ' '{print $2}' > testCount"
+            "cd %sbuild && ctest -N|grep 'Total Tests:' | awk -F ': ' '{print $2}' > testCount"
             % PADDLE_ROOT)
-        f = open("%s/build/testCount" % PADDLE_ROOT)
+        f = open("%sbuild/testCount" % PADDLE_ROOT)
         testCount = f.read()
         f.close()
         return int(testCount.strip())