diff --git a/doc/README.md b/doc/README.md
index f85a464a4f0..a3098094210 100644
--- a/doc/README.md
+++ b/doc/README.md
@@ -37,7 +37,7 @@
 + [Using MySQL](ci/services/mysql.md)
 + [Using PostgreSQL](ci/services/postgres.md)
 + [Using Redis](ci/services/redis.md)
-+ [Using Other Services](ci/docker/using_docker_images.html#how-to-use-other-images-as-services)
++ [Using Other Services](ci/docker/using_docker_images.md#how-to-use-other-images-as-services)
 
 ### CI Examples
 
diff --git a/doc/ci/README.md b/doc/ci/README.md
index ae921b6f988..5d9d7a81db3 100644
--- a/doc/ci/README.md
+++ b/doc/ci/README.md
@@ -20,7 +20,7 @@
 + [Using MySQL](services/mysql.md)
 + [Using PostgreSQL](services/postgres.md)
 + [Using Redis](services/redis.md)
-+ [Using Other Services](docker/using_docker_images.html#how-to-use-other-images-as-services)
++ [Using Other Services](docker/using_docker_images.md#how-to-use-other-images-as-services)
 
 ### Examples