diff --git a/src/Illuminate/Foundation/Application.php b/src/Illuminate/Foundation/Application.php
index c0e17f965dfc..e385eb6114de 100755
--- a/src/Illuminate/Foundation/Application.php
+++ b/src/Illuminate/Foundation/Application.php
@@ -468,7 +468,7 @@ public function environmentFile()
      */
     public function environmentFilePath()
     {
-        return $this->environmentPath().'/'.$this->environmentFile();
+        return $this->environmentPath().DIRECTORY_SEPARATOR.$this->environmentFile();
     }
 
     /**