diff --git a/docs/custom_mutators.md b/docs/custom_mutators.md
index 61d711e4..62e01f83 100644
--- a/docs/custom_mutators.md
+++ b/docs/custom_mutators.md
@@ -89,10 +89,10 @@ def queue_get(filename):
 
 def queue_new_entry(filename_new_queue, filename_orig_queue):
     pass
-```
 
 def introspection():
     return string
+```
 
 ### Custom Mutation