diff --git a/share/completions/mutt.fish b/share/completions/mutt.fish
index bc0626d45..7258d4e7f 100644
--- a/share/completions/mutt.fish
+++ b/share/completions/mutt.fish
@@ -1,4 +1,4 @@
-if which abook >/dev/null
+if which abook >/dev/null ^/dev/null
     complete -c mutt -f -a '(__fish_print_abook_emails)'
     complete -c mutt -s c -x -d 'Specify a carbon-copy (CC) recipient' -a '(__fish_print_abook_emails)'
     complete -c mutt -s b -x -d 'Specify a blind-carbon-copy (BCC) recipient' -a '(__fish_print_abook_emails)'