diff --git a/paddle/scripts/paddle_build.sh b/paddle/scripts/paddle_build.sh
index c9f74127457e422ec4adab23b6d333e72250faf4..9837117fbbc0b4218dc89fc5de0c176abcd32b83 100755
--- a/paddle/scripts/paddle_build.sh
+++ b/paddle/scripts/paddle_build.sh
@@ -333,7 +333,8 @@ function assert_api_not_changed() {
     python ${PADDLE_ROOT}/tools/diff_api.py ${PADDLE_ROOT}/paddle/fluid/API.spec new.spec
     deactivate
 
-    API_CHANGE=`git diff --name-only HEAD^ | grep "paddle/fluid/API.spec" || true`
+    # Use git diff --name-only HEAD^ may not get file changes for update commits in one PR
+    API_CHANGE=`echo $CHANGED_FILES | grep "paddle/fluid/API.spec" || true`
     echo "checking API.spec change, PR: ${GIT_PR_ID}, changes: ${API_CHANGE}"
     if [ ${API_CHANGE} ] && [ "${GIT_PR_ID}" != "" ]; then
         # TODO: curl -H 'Authorization: token ${TOKEN}'