diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 90501d36b4e788b8a5e062f1be97375fb7bed911..9afb1ddc5f96f9f6f51a455f5abb9c7dca2b6a78 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -16,6 +16,7 @@ build:
     script:
         - printenv | sort
         - cd ..
+        - pwd
         - rm -rf waves
         - wget -q https://gitlab.uliege.be/am-dept/waves/-/archive/feature_fpm/waves-feature_fpm.tar.bz2
         - tar xf waves-feature_fpm.tar.bz2
@@ -30,7 +31,7 @@ build:
         - rm -rf build workspace
         - mkdir build
         - cd build
-        - cmake -DCMAKE_PREFIX_PATH=../../waves -Wno-dev ..
+        - cmake -DCMAKE_PREFIX_PATH=${CI_BUILDS_DIR}/waves -Wno-dev ..
         - make -j $(nproc)
     artifacts:
         paths: