diff --git a/61/build.py b/61/build.py
index fb9cefa..a90d4a0 100644
--- a/61/build.py
+++ b/61/build.py
@@ -4,6 +4,6 @@ current_dir = os.getcwd()
 
 # Removing all old item Model json files, since they are now located in 'assets/minecraft/items' and are a different format!
 itemModelsDir = os.path.join(current_dir, "assets/minecraft/models/item")
-jsonFiles = [name for name in os.listdir(itemModelsDir) if os.path.isfile(os.path.join(itemModelsDir, name))]
+jsonFiles = [name for name in os.listdir(itemModelsDir) if os.path.isfile(os.path.join(itemModelsDir, name)) and name.endswith(".json") ]
 for jsonFile in jsonFiles:
     os.remove(os.path.join(itemModelsDir, jsonFile))