diff --git a/runtime/ftplugin/php.vim b/runtime/ftplugin/php.vim
index 884bf72..f0b3e02 100644
--- a/runtime/ftplugin/php.vim
+++ b/runtime/ftplugin/php.vim
@@ -51,6 +51,11 @@
 endif
 " ###
 
+if exists('&ofu')
+  setlocal ofu=phpcomplete#CompletePHP
+endif
+
+
 setlocal commentstring=/*%s*/
 
 " Undo the stuff we changed.