diff --git a/media/TrickPlayThumbnailsDASH/run_scripts_dash.sh b/media/TrickPlayThumbnailsDASH/run_scripts_dash.sh
index 8f70177..9d85a2d 100755
--- a/media/TrickPlayThumbnailsDASH/run_scripts_dash.sh
+++ b/media/TrickPlayThumbnailsDASH/run_scripts_dash.sh
@@ -7,7 +7,7 @@
 # a .mpd manifest with thumbnails
 
 if [ $# -lt 6 ]; then
-	echo "Usage: $0 <input-file> <output-dir> <output-prefix> <resolution> <columns> <rows> <interval>"
+	echo "Usage: $0 <input-file> <output-dir> <resolution> <columns> <rows> <interval>"
 	exit 1
 fi