diff --git a/main.py b/main.py
index 4a6eace..e3d48f0 100644
--- a/main.py
+++ b/main.py
@@ -118,10 +118,10 @@ if __name__ == '__main__':
     @app.route('/mode', methods=['GET'])
     def mode():
         args = request.args()
-        mode = args.get('mode')
-        r = args.get('r')
-        g = args.get('g')
-        b = args.get('b')
+        mode = str(args.get('mode'))
+        r = str(args.get('r'))
+        g = str(args.get('g'))
+        b = str(args.get('b'))
         if mode is None:
             return 'No mode specified'
         elif mode == "":