diff --git a/tetras_extraction/script/extract_mp3.sh b/tetras_extraction/script/extract_mp3.sh
index fdf331535e1884316ab0b6b3de60cc36deb4c8ed..12722b9edd1499b30da4d47fc3326fb63fa9d4a5 100755
--- a/tetras_extraction/script/extract_mp3.sh
+++ b/tetras_extraction/script/extract_mp3.sh
@@ -20,6 +20,8 @@ while [ -n "$1" ]; do
 	shift
 done
 
+echo $input_file
+
 if [ -z "$input_file" ]; then
 	echo "Usage: $0 [-y|--yes-overwrite] [-o|--output-dir <dir>] <file>"
 	exit 1