diff --git a/How-to-add-a-new-ability.md b/How-to-add-a-new-ability.md
index a23c301..621f058 100644
--- a/How-to-add-a-new-ability.md
+++ b/How-to-add-a-new-ability.md
@@ -14,7 +14,7 @@ This tutorial is for how to add a new ability. As an example, we'll add Snow War
 
 ## 1. Define an ability constant
 
-Edit [include/constants/abilities.h](../blob/master/include/constants/abilities.asm):
+Edit [include/constants/abilities.h](../blob/master/include/constants/abilities.h):
 
 ```diff
 #ifndef GUARD_CONSTANTS_ABILITIES_H