diff --git a/shell/aliases.sh b/shell/aliases.sh
index 3d75c54..f0e443a 100755
--- a/shell/aliases.sh
+++ b/shell/aliases.sh
@@ -32,7 +32,7 @@ alias youtube-dl='youtube-dl -o "%(title)s.%(ext)s"'
 alias yta='youtube-dl -o "%(title)s.%(ext)s" --extract-audio'
 alias yt3='youtube-dl -o "%(title)s.%(ext)s" --extract-audio --audio-format mp3'
 alias music-gain="find ~/Music -iname '*.mp3' -execdir mp3gain -q -k -p {} \+"
-alias music-fix="find ~/Music -print0 | xargs -P \$(fgrep -c processor /proc/cpuinfo) -0 nice -n 19 mp3val -f"
+alias music-fix="find ~/Music -print0 | xargs -P 0 -0 nice -n 19 mp3val -f"
 
 alias grep="grep --color=auto"
 alias ls='ls --color=auto'