diff --git a/README.md b/README.md
index ac9010d..6b79a5c 100644
--- a/README.md
+++ b/README.md
@@ -47,7 +47,7 @@ If you know some other ruby-trick, please contribute!
 
 ### [Shortcut variable interpolation](shortcut_variable_interpolation.rb)
 
-#### [Single instance running](single_instance_running.rb)
+### [Single instance running](single_instance_running.rb)
 
 ### [Struct without assignment](struct_without_assignment.rb)