diff --git a/mode-customizations/php-mode.el b/mode-customizations/php-mode.el
index 4a22fd9..f941c80 100644
--- a/mode-customizations/php-mode.el
+++ b/mode-customizations/php-mode.el
@@ -1,3 +1,5 @@
+(add-to-list 'auto-mode-alist '("\\.php\\'" . php-mode))
+
 (defun customizations-for-php-mode ()
   (interactive)
   (setq whitespace-action (quote (auto-cleanup)))