diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 64808f155d36517b7b551b7eb07496d422e1855a..591a61d7d9106000102140d401c00dad47c4623f 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -81,7 +81,7 @@ native_Debian_clang:
     - cd build
     - cmake .. -DCMAKE_CXX_COMPILER_LAUNCHER=ccache #-DWERROR=ON
     - make -j6
-    - xvfb-run ctest -j6 --output-on-failure
+    - xvfb-run -a ctest -j6 --output-on-failure
     - make package_source
   artifacts:
     paths: