diff --git a/phpBB/install/install_install.php b/phpBB/install/install_install.php
index 7981908957..2b36622174 100755
--- a/phpBB/install/install_install.php
+++ b/phpBB/install/install_install.php
@@ -280,7 +280,7 @@ class install_install extends module
 		foreach ($directories as $dir)
 		{
 			$write = $exists = true;
-			if (file_exists($phpbb_root_path . $dir))
+			if (file_exists($phpbb_root_path . $dir) && is_dir($phpbb_root_path . $dir))
 			{
 				if (!is_writeable($phpbb_root_path . $dir))
 				{