diff --git a/flac2opus.sh b/flac2opus.sh
index a4eb321..2ab5c0b 100755
--- a/flac2opus.sh
+++ b/flac2opus.sh
@@ -3,4 +3,6 @@ INFILE=$1
 echo $INFILE
 OUTFILE=$(basename "$1" .flac).ogg
 echo $OUTFILE
-opusenc --bitrate 22 --framesize 20 "${INFILE}" "${OUTFILE}" 
+if [ ! -z "$1" ]; then
+	opusenc --bitrate 22 --framesize 20 "${INFILE}" "${OUTFILE}" 
+fi