diff --git a/installer.sh b/installer.sh
index 2b2d5306..bc6686f3 100755
--- a/installer.sh
+++ b/installer.sh
@@ -107,7 +107,7 @@ _install_pkgx() {
 
     rm -r "$tmpdir"
 
-    if [ "$(command which pkgx)" != /usr/local/bin/pkgx ]; then
+    if [ "$(command -v pkgx)" != /usr/local/bin/pkgx ]; then
       echo "warning: active pkgx is not /usr/local/bin/pkgx" >&2
       export PATH="/usr/local/bin:$PATH"  # so we can exec if required
     fi