diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index f78ff2a..af73461 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -38,5 +38,5 @@ build-docker:
         - go.mod
         - requirements.txt
         - ansible.cfg
-      if: $CI_COMMIT_REF_NAME =~ /^($CI_DEFAULT_BRANCH)$/
+      if: $CI_COMMIT_REF_NAME =~ /^(${CI_DEFAULT_BRANCH})$/
       when: always