diff --git a/tgbot/kollagen-bot/main.py b/tgbot/kollagen-bot/main.py
index a629dbc..45b1a93 100644
--- a/tgbot/kollagen-bot/main.py
+++ b/tgbot/kollagen-bot/main.py
@@ -133,9 +133,9 @@ class KollagenBot:
                 "-r",
                 *directories,
                 "-w",
-                args.width,
+                str(args.width),
                 "-h",
-                args.height,
+                str(args.height),
                 *mode,
                 *num_images,
                 "-o",