diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 3b542e71..81af9f86 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -73,8 +73,8 @@ pull centos7 clang-5: *pull_images
   stage: base
   image: docker:stable
   # only:
-    # changes:
-      # - tests/dockerfiles/*
+  # changes:
+  # - tests/dockerfiles/*
   services:
     - docker:dind
   before_script:
@@ -887,9 +887,9 @@ check clang-format:
   image: docker:stable
   services:
     - docker:dind
-  # only:
+  only:
     # changes:
-      # - tests/dockerfiles/*
+    # - tests/dockerfiles/*
     refs:
       - master
       - tags
@@ -916,9 +916,9 @@ push fedora-33 base: *push_base_images
 
 .push_images: &push_images
   <<: *push_base_images
-  # only:
+  only:
     # changes:
-      # - tests/dockerfiles/*
+    # - tests/dockerfiles/*
     refs:
       - master
       - tags