diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 9a20176ccfd7c1e307ca2c6f7b2c34ad068165a9..02bfc72a1375b4b35acd9c1bb0f7e4c2c9ae3450 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -13,6 +13,8 @@ stages:
       - stuck_or_timeout_failure
 
 natif-build:
+  variables:
+    CI_DEBUG_TRACE: "true"
   extends: .retry_twice
   stage: build
   image: registry.orfeo-toolbox.org/sdinot/otb:ubuntu-18.04-gccV0.2
diff --git a/CI/main_ci.cmake b/CI/main_ci.cmake
index 24eea447c9159cf64816e6efa7a6c2a22988cc2d..9d88c80af8674d934c45f4ff6f5a2c2e0f479100 100644
--- a/CI/main_ci.cmake
+++ b/CI/main_ci.cmake
@@ -25,8 +25,9 @@ set (ENV{LANG} "C") # Only ascii output
 # Build Configuration : Release, Debug..
 set (CTEST_BUILD_CONFIGURATION "Release")
 set (CTEST_CMAKE_GENERATOR "Unix Makefiles")
-set (CTEST_BUILD_NAME "ENV{CI_MERGE_REQUEST_PROJECT_PATH}")
-set (CTEST_SITE "ENV{CI_REGISTRY_IMAGE}")
+
+set (CTEST_BUILD_NAME "$ENV{CI_MERGE_REQUEST_PROJECT_PATH}")
+set (CTEST_SITE "$ENV{CI_REGISTRY_IMAGE}")
 
 # Directory variable
 set (CTEST_SOURCE_DIRECTORY "${OTB_SOURCE_DIR}")