diff --git a/app.iced b/app.iced
index 21826f9..95c94f1 100644
--- a/app.iced
+++ b/app.iced
@@ -255,7 +255,7 @@ ts3clientService.on "started", (ts3proc) =>
 			when "vol"
 				vol = parseInt paramline
 
-				if paramline.trim().length <= 0 or vol > 200 or vol < 0
+				if paramline.trim().length <= 0 or vol == NaN or vol > 200 or vol < 0
 					ts3query.sendtextmessage args.targetmode, invoker.id, "[B]vol <number>[/B] - takes a number between 0 (0%) and 200 (200%) to set the volume. 100% is 100. Defaults to 50 (50%) on startup."
 					return