diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 5faeed9da50825a27b1c1adf12e1d8e04f15bd83..d521140cbf6f2fdd724d8f9ba132338eda9d52c4 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -26,7 +26,7 @@ RebaseCheck:
     - scripts/connect_upstream_repo.sh $CI_MERGE_REQUEST_PROJECT_URL
     - git fetch upstream
     - hash1=$(git show-ref upstream/master | cut -f1 -d' ')
-    - hash2=$(git merge-base upstream/master origin/$CI_MERGE_REQUEST_SOURCE_BRANCH_NAME)
+    - hash2=$(git merge-base upstream/master HEAD)
     - echo "${hash1}"
     - echo "${hash2}"
     - if [ "${hash1}" = "${hash2}" ]; then