diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 48df756dec7d94b141d32f5586c82810f854e5aa..2f04e88aa6490e66e79c2a7bffcf7232f234068e 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -55,7 +55,7 @@ build_docker:
         - docker build -t $CI_REGISTRY_IMAGE:$LAST_RELEASE .
         - docker push $CI_REGISTRY_IMAGE:$LAST_RELEASE
         # Save docker image into a tar file to be uploaded in next stage
-        - docker save -o Docker_$CI_PROJECT_NAME_$LAST_RELEASE.tar $CI_REGISTRY_IMAGE:$LAST_RELEASE
+        - docker save -o Docker_${CI_PROJECT_NAME}_$LAST_RELEASE.tar $CI_REGISTRY_IMAGE:$LAST_RELEASE
         - cd .. && mkdir -p build && cp Docker/*.tar build
         - ls build
     artifacts:
diff --git a/examples/CI_code_snippets/5.ex_CI_build_image_and_upload_OSSR.md b/examples/CI_code_snippets/5.ex_CI_build_image_and_upload_OSSR.md
index 2cce2dc839627e77b44d806636867c24412f4fc0..3a69ff97533cc50eb56752eaae5a361863498dc1 100644
--- a/examples/CI_code_snippets/5.ex_CI_build_image_and_upload_OSSR.md
+++ b/examples/CI_code_snippets/5.ex_CI_build_image_and_upload_OSSR.md
@@ -48,7 +48,7 @@ build_docker_image:
     - docker push $CI_REGISTRY_IMAGE:$LAST_RELEASE
 
     # Save docker image into a file to be uploaded in next stage
-    - docker save -o Docker_$CI_PROJECT_NAME_$LAST_RELEASE.tar $CI_REGISTRY_IMAGE:$LAST_RELEASE
+    - docker save -o Docker_${CI_PROJECT_NAME}_$LAST_RELEASE.tar $CI_REGISTRY_IMAGE:$LAST_RELEASE
     - cd .. && mkdir -p build && cp Docker/*.tar build
     - ls build
   artifacts: