diff --git a/TaikoNus3bankMake/README.md b/TaikoNus3bankMake/README.md
index 2541bc5..7a433fd 100644
--- a/TaikoNus3bankMake/README.md
+++ b/TaikoNus3bankMake/README.md
@@ -4,5 +4,8 @@ Simple Python 3 script to allows you to quickly create nus3bank files and specif
 
 `Usage: nus3.py <audio_file> <preview_point> <output_file>`  
 
+Only supports specific output file names, adheering to the game's ID system.  
+E.g: `song_abs.nus3bank` up to `song_fungus.nus3bank`  
+
 By default includes template files for Nijiiro.  
 `nus3.py` can be modified along with the templates to specifiy offsets for other `.nus3bank` files