diff --git a/week5/app.py b/week5/app.py
index 2aa9e81..29d07d1 100644
--- a/week5/app.py
+++ b/week5/app.py
@@ -41,8 +41,8 @@ def upload_file():
             filename, fileextension = os.path.splitext(file.filename)
             overwrite = request.form["overwrite"]
 
-            input_file_path = os.path.join(app.config['UPLOAD_FOLDER'], (filename, fileextension))
-            overwritten_file_path = os.path.join(app.config['UPLOAD_FOLDER'], (overwrite, '.png'))
+            input_file_path = os.path.join(app.config['UPLOAD_FOLDER'], filename + fileextension)
+            overwritten_file_path = os.path.join(app.config['UPLOAD_FOLDER'], overwrite + ".png")
 
             print("[input file path]:", input_file_path)
             print("[overwritten file path]:", overwritten_file_path)