diff --git a/0.3c.md b/0.3c.md
index 2b6429d..5ac63cf 100644
--- a/0.3c.md
+++ b/0.3c.md
@@ -1,7 +1,7 @@
 for Minecraft 1.15 and 1.16 released on January 4th, 2021.  
 _"Hotfix III, let the bugs be free"_
 
-Important note: one-item shapeless crafting recipes are no longer processed by the mechanical mixer, which can break some machines from version 0.3b.
+Important note: one-item shapeless crafting recipes are no longer processed by the mechanical mixer, which can break some machines from version 0.3b. Exercise care when updating old worlds.
 
 ### Enhancements, Fixes
    - Fixed honey blocks not acting like slime blocks when assembling contraptions