diff --git a/rules/os/os_anti_virus_installed.yaml b/rules/os/os_anti_virus_installed.yaml
index 32d7492d..3c7d4aa7 100644
--- a/rules/os/os_anti_virus_installed.yaml
+++ b/rules/os/os_anti_virus_installed.yaml
@@ -9,7 +9,10 @@ check: |
 result:
   integer: 1
 fix: |
+  [source,bash]
+  ----
   /bin/launchctl enable system/com.apple.mrt
+  ----
 references:
   cce:
     - CCE-90900-2