diff --git a/Makefile b/Makefile
index 4faeb75..814a077 100644
--- a/Makefile
+++ b/Makefile
@@ -20,7 +20,7 @@
 #//////////////////////////////////////////////////////////////
 PROJECT_NAME := scripts
 SHELL := bash
-VERSION := 1.3.16
+VERSION := 1.3.17
 RM := rm
 
 all: install
diff --git a/audio/merge-audio.sh b/audio/merge-audio.sh
index ad50fa3..4060a79 100644
--- a/audio/merge-audio.sh
+++ b/audio/merge-audio.sh
@@ -27,7 +27,7 @@ elif (($# == 4)); then
     ffmpeg -i "$1" -i "$2" -i "$3" \
         -filter_complex '[0:0][1:0][2:0]concat=n=3:v=0:a=1[out]' \
         -map '[out]' "$4"
-elif (($# == 6)); then
+elif (($# == 5)); then
     ffmpeg -i "$1" -i "$2" -i "$3" -i "$4" \
         -filter_complex '[0:0][1:0][2:0][3:0]concat=n=4:v=0:a=1[out]' \
         -map '[out]' "$5"