diff --git a/doc/source/user/v2/cnf/auto_heal_fm/index.rst b/doc/source/user/v2/cnf/auto_heal_fm/index.rst
index c7ef519c7..8fbec0016 100644
--- a/doc/source/user/v2/cnf/auto_heal_fm/index.rst
+++ b/doc/source/user/v2/cnf/auto_heal_fm/index.rst
@@ -167,7 +167,7 @@ The following is the content of a sample ``prometheus.yml``:
     - targets: ["<IP of Kubernetes>:<port of metrics>"]
 
 
-The following is the content of a sample ``tacker-samplevnf-rules.json``:
+The following is the content of a sample ``tacker-samplevnf-rules.yaml``:
 
 .. code-block:: yaml