diff --git a/etc/rc.initial_firmware_update b/etc/rc.initial_firmware_update
index f53379317e..eb731ad3cf 100644
--- a/etc/rc.initial_firmware_update
+++ b/etc/rc.initial_firmware_update
@@ -40,7 +40,7 @@ switch ($command) {
 			die;
 		$status = does_url_exist($url);
 		if($status) {
-			/etc/rc.conf_mount_rw
+			conf_mount_rw();
 			echo "\nFetching file size...\n";
 			$file_size = exec("fetch -s \"$url\"");
 			$file_size = trim($file_size, "\r");