diff --git a/ext/lwip-1.4.0.zip b/ext/lwip-1.4.0.zip
index 3dbe92da4..a4ea860a2 100644
Binary files a/ext/lwip-1.4.0.zip and b/ext/lwip-1.4.0.zip differ
diff --git a/ext/readme.txt b/ext/readme.txt
index 83a074610..04b45625d 100644
--- a/ext/readme.txt
+++ b/ext/readme.txt
@@ -19,7 +19,7 @@ and without any modification, in order to use the libraries unpack them
 under ./ext as:
 
 ./ext/uip-1.0
-./ext/lwip-1.4.0
+./ext/lwip
 ./ext/fatfs
 ./ext/stm32lib (you also need to copy stm32f10x_conf.h in your project)