diff --git a/docker-cloud/builds/advanced.md b/docker-cloud/builds/advanced.md
index 7649e6a04c..003a7d1466 100644
--- a/docker-cloud/builds/advanced.md
+++ b/docker-cloud/builds/advanced.md
@@ -20,7 +20,7 @@ processes and do not affect your service's run environment.
 * `COMMIT_MSG`: the message from the commit being tested and built.
 * `DOCKER_REPO`: the name of the Docker repository being built.
 * `DOCKER_TAG`: the Docker repository tag being built.
-* `IMAGE_NAME`: the name and tag of the Docker repository being built. (This variable is a combination of `DOCKER_REPO`/`DOCKER_TAG`.)
+* `IMAGE_NAME`: the name and tag of the Docker repository being built. (This variable is a combination of `DOCKER_REPO`:`DOCKER_TAG`.)
 
 If you are using these build environment variables in a
 `docker-compose.test.yml` file for automated testing, declare them in your `sut`