diff --git a/utils/tests/gitlab-ci-doc.yml b/utils/tests/gitlab-ci-doc.yml
index e87e9601b..375ef8d75 100644
--- a/utils/tests/gitlab-ci-doc.yml
+++ b/utils/tests/gitlab-ci-doc.yml
@@ -28,7 +28,13 @@ doxygen:
 #    - mkdir -p public/doxygen
     - git remote add ns-3-origin https://gitlab.com/nsnam/ns-3-dev.git
     - git fetch ns-3-origin
-    - doc/doxygen.warnings.report.sh -f "$(git diff --name-only ns-3-origin/master --diff-filter=d | tr '\n' ' ' | sed 's/ $//g;s/ /\\\|/g')"
+#    - doc/doxygen.warnings.report.sh -f "$(git diff --name-only ns-3-origin/master --diff-filter=d | tr '\n' ' ' | sed 's/ $//g;s/ /\\\|/g')"
+    - export CHANGED_FILES=$(git diff --name-only ns-3-origin/master --diff-filter=d | tr '\n' ' ' | sed 's/ $//g;s/ /\\\|/g')
+    - doc/doxygen.warnings.report.sh -f \"$CHANGED_FILES\" || EXIT_CODE=$?
+    - if [ -z $EXIT_CODE ]; then export EXIT_CODE=0; fi;
+    - if [ $EXIT_CODE -ne 0 ]; then if [ -z $CHANGED_FILES ]; then exit 0; fi; fi;
+    - exit $EXIT_CODE
+
 #    - doxygen doc/doxygen.conf
 #    - mv doc/html/ public/doxygen
   cache: