diff --git a/app/classes/shared/main_controller.py b/app/classes/shared/main_controller.py
index 681b9b1e..82147e08 100644
--- a/app/classes/shared/main_controller.py
+++ b/app/classes/shared/main_controller.py
@@ -233,7 +233,7 @@ class Controller:
 
         FileHelpers.del_dirs(temp_dir)
 
-    def del_support_file(temp_zip_storage):
+    def del_support_file(self, temp_zip_storage):
         try:
             FileHelpers.del_file(temp_zip_storage)
         except FileNotFoundError: