diff --git a/completions/chsh b/completions/chsh
index 63f8198c..c19e436c 100644
--- a/completions/chsh
+++ b/completions/chsh
@@ -17,9 +17,8 @@ _chsh()
             ;;
     esac
 
-    if [[ "$cur" == -* && "$( uname -s )" == @(Linux|GNU|GNU/*) ]]; then
-        COMPREPLY=( $( compgen -W '--shell --list-shells --help --version' \
-            -- "$cur" ) )
+    if [[ "$cur" == -* ]]; then
+        COMPREPLY=( $( compgen -W '$( _parse_usage "$1" )' -- "$cur" ) )
     else
         _allowed_users
     fi