diff --git a/nushell/modules/pj_brew.nu b/nushell/modules/pj_brew.nu
index 4434372..20acbb1 100644
--- a/nushell/modules/pj_brew.nu
+++ b/nushell/modules/pj_brew.nu
@@ -1,5 +1,5 @@
 export def --env "pj brewthu" [] {
-    let os_name = ($nu.os-info.name? | default "" | into string | str downcase)
+    let os_name = ($nu.os-info.name? | default "" | into string | str lowercase)
     if not (($os_name | str contains "darwin") or ($os_name | str contains "macos")) {
         return
     }