diff --git a/.gitlab/ci/build.gitlab-ci.yml b/.gitlab/ci/build.gitlab-ci.yml
index 0de42b0b66ccb7cf8fc6682bf3e849f488e13395..101f46b868f615c7ab0e8f241acbf90034a8482c 100644
--- a/.gitlab/ci/build.gitlab-ci.yml
+++ b/.gitlab/ci/build.gitlab-ci.yml
@@ -9,8 +9,8 @@ build:ubuntu_cpp:
     - mkdir -p install_cpp
     - BASE_URL=`echo $CI_REPOSITORY_URL | sed "s;\/*$CI_PROJECT_PATH.*;;"`
     - REPO_URL="$BASE_URL/aidge/aidge_core.git"
-    - echo REPO_URL
-    - echo BASE_URL
+    - echo $REPO_URL
+    - echo $BASE_URL
     - cd build_cpp
     - cmake -DCMAKE_INSTALL_PREFIX:PATH=../install_cpp -DCMAKE_BUILD_TYPE=Debug -DWERROR=ON ..
     - make -j4 all install