diff --git a/Library/Homebrew/brew.sh b/Library/Homebrew/brew.sh
index a04c3e2ba6..9af5397792 100644
--- a/Library/Homebrew/brew.sh
+++ b/Library/Homebrew/brew.sh
@@ -6,7 +6,7 @@ case "$HOMEBREW_SYSTEM" in
 esac
 
 # Force UTF-8 to avoid encoding issues for users with broken locale settings.
-if ! which locale &>/dev/null
+if ! command -v locale >/dev/null
 then
   export LC_ALL=C
 elif [[ "$(locale charmap 2>/dev/null)" != "UTF-8" ]]