diff --git a/Auto-DevOps.gitlab-ci.yml b/Auto-DevOps.gitlab-ci.yml
index 51995876fa0e98f3ed6d087c01e38335eac59714..0d9e7257f47fad2fc6c0f479b033345ce1bcd85f 100644
--- a/Auto-DevOps.gitlab-ci.yml
+++ b/Auto-DevOps.gitlab-ci.yml
@@ -2,7 +2,7 @@ include:
   - template: Auto-DevOps.gitlab-ci.yml
 
 variables:
-  GITLAB_MIRROR_PREFIX: "${CI_REGISTRY}/gitlab"
+  # Set `GITLAB_MIRROR_PREFIX` variable on the instance/group/project level. Exapmple - GITLAB_MIRROR_PREFIX: "${CI_REGISTRY}/gitlab"
   SECURE_ANALYZERS_PREFIX: "${GITLAB_MIRROR_PREFIX}/security-products"
   CLUSTER_INTEGRATION_PREFIX: "${GITLAB_MIRROR_PREFIX}/cluster-integration"
   CODE_QUALITY_PREFIX: "${GITLAB_MIRROR_PREFIX}/codequality"
diff --git a/README.md b/README.md
index a3708670a4672c6730850af4de512c31e4bf45ce..034ad3d8266431dd24f55ea1ed80a972fc34c16a 100644
--- a/README.md
+++ b/README.md
@@ -13,3 +13,5 @@ include:
 ```
 
 ...where `project: 'gitlab/auto-devops'` contains absolute path to this repository from the root of your gitlab instance without leading slash.
+
+Set `GITLAB_MIRROR_PREFIX` variable on the instance/group/project level.