diff --git a/vcsh b/vcsh
index 965f83dd00b7fe0bde3c8a77b1876fba06d9a4d7..83bb2676c92809550e228a1975f5e529cb9847c1 100755
--- a/vcsh
+++ b/vcsh
@@ -286,12 +286,8 @@ retire() {
 	unset VCSH_DIRECTORY
 }
 
-command_exists() {
-	command -v "$1" >/dev/null 2>&1 || fatal "Could not find '$1' command"
-}
-
 list_untracked() {
-	command_exists comm
+	command -v 'comm' >/dev/null 2>&1 || fatal "Could not find 'comm'"
 
 	temp_file_others=$(mktemp "${TMPDIR:-/tmp}/tmp.XXXXXXXXXX") || fatal 'Could not create temp file'
 	temp_file_untracked=$(mktemp "${TMPDIR:-/tmp}/tmp.XXXXXXXXXX") || fatal 'Could not create temp file'