diff --git a/Sprite-sheet.md b/Sprite-sheet.md
index 41897cb..4716d37 100644
--- a/Sprite-sheet.md
+++ b/Sprite-sheet.md
@@ -12,5 +12,5 @@ Where `0.png` and `1.png` are app icons in the same directory. The app icons sho
 
 You can then generate the t3x by running:
 ```bash
-tex3ds -i path/to/file.t3x -o path/to/file.t3x
+tex3ds -i path/to/file.t3s -o path/to/file.t3x
 ```
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