diff --git a/public/images/items.json b/public/images/items.json
index 5e8d3dbd93d..64265382dea 100644
--- a/public/images/items.json
+++ b/public/images/items.json
@@ -10,7 +10,7 @@
 			"scale": 1,
 			"frames": [
 				{
-					"filename": "mystical-rock",
+					"filename": "mystical_rock",
 					"rotated": false,
 					"trimmed": true,
 					"sourceSize": {
diff --git a/public/images/items/mystical-rock.png b/public/images/items/mystical_rock.png
similarity index 100%
rename from public/images/items/mystical-rock.png
rename to public/images/items/mystical_rock.png