diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 3e06706557d4f6f2b70ac5da9ff8695f882114a2..ed97a6699fea5ac8d66f0d4a5ff165f05e8df17c 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -22,6 +22,7 @@ native-build:
 
 debian-build:
   extends: .general
+  only: [merge_requests]
   stage: build
   image: registry.orfeo-toolbox.org/gbonnefille/otb-build-env/otb-debian-native:unstable
   script:
diff --git a/CI/debian-unstable-gcc.cmake b/CI/debian-unstable-gcc.cmake
index 7c028d94e83833ef74e13e3aeb0b51dfadfcb70f..e1579da20d663c771b67d065ba49562c03a70969 100644
--- a/CI/debian-unstable-gcc.cmake
+++ b/CI/debian-unstable-gcc.cmake
@@ -18,7 +18,7 @@
 # limitations under the License.
 #
 
-# Configuration options for ubuntu-18.04-gcc-shark-3.1.4
+# Configuration options for debian-unstable-gcc
 
 set(site_option
 "opencv_INCLUDE_DIR:PATH=/usr/include