diff --git a/vimrc b/vimrc
index e3d0775..3be65c0 100644
--- a/vimrc
+++ b/vimrc
@@ -217,7 +217,7 @@ if has('autocmd')
     autocmd BufRead,BufNewFile *.html set et sw=2 indk=
     autocmd BufRead,BufNewFile *.md set et ft=markdown sw=2
     autocmd BufRead,BufNewFile *.opml set et sw=2
-    autocmd BufRead,BufNewFile *.ps1 set et sw=4
+    autocmd BufRead,BufNewFile *.ps1 set et sw=4 ts=4
     autocmd BufRead,BufNewFile *.rs set et sw=4
     autocmd BufRead,BufNewFile *.txt set et sw=3 tw=72
     autocmd BufRead,BufNewFile *.xml set et sw=2