diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index d630671424d707a35e40024b7c32bbb74621777a..0d26d8c367d7d62c6f6050013f357053d25fc5f2 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -34,6 +34,7 @@ build:centos6.6:
   image: centos:6.6
   script:
   - echo "Building on CentOS 6..."
+  - module list
   - cmake .. -DENABLE_MM=1
          -DOPEN_MM_LIBRARY=$EBROOTOPENMM/lib/libOpenMM.so
          -DOPEN_MM_PLUGIN_DIR=$EBROOTOPENMM/lib/plugins