diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index beef3797a97da0566e5384aaf5a23195f61dc40c..f8ef195b85b7336fa9aed4ab0f22406d7fc3a346 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -25,8 +25,7 @@ configure-linux:
   script:
     - mkdir -p build
     - cd build
-    - which git
-    - cmake -DCMAKE_BUILD_TYPE=Debug  ..
+    - cmake -DCMAKE_BUILD_TYPE=Debug -DCMAKE_CXX_COMPILER=g++-8  ..
     - echo "configure | ${CI_PROJECT_DIR}"
   stage: configure
   tags: