diff --git a/client/bs_shutdown.py b/client/bs_shutdown.py
index 9361424..9e80e6f 100644
--- a/client/bs_shutdown.py
+++ b/client/bs_shutdown.py
@@ -44,7 +44,7 @@ def set_shutdown(time, now):
         return
     LAST_VALUE = time
     print("[BS Shutdown] shutting down in " + str(time - now) + " seconds")
-    subprocess.run(["shutdown", "/s", "/t", (time - now), " "])
+    subprocess.run(["shutdown", "/s", "/t", str(time - now), " "])
 
 
 def remove_shutdown():