diff --git a/HACKING.md b/HACKING.md
index 5a1855b..3aaecfe 100644
--- a/HACKING.md
+++ b/HACKING.md
@@ -35,6 +35,7 @@ cp /path/to/your-mod.jar .
 
 To change version or loader of Minceraft, edit `mine-data/mmc-pack.json` file.
 You can generate it with MultiMC or PrismLauncher, and just copy.
+If you are changing the loader, you might also want to remove existing fabric mods, they are located in the `mods/` folders. 
 
 # How to change my nickname
 
@@ -42,4 +43,4 @@ UltimMC's nickname is stored in `run_mine.sh` file. Just change it from Steve to
 
 # Finally
 
-Finally, after all the changes, build the ISO by [this guide](https://github.com/MeexReay/minceraftOS/blob/main/BUILD.md)
\ No newline at end of file
+Finally, after all the changes, build the ISO by [this guide](https://github.com/MeexReay/minceraftOS/blob/main/BUILD.md)