diff --git a/package/mono/mono.mk b/package/mono/mono.mk
index c0a0827213..63026f1441 100644
--- a/package/mono/mono.mk
+++ b/package/mono/mono.mk
@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-MONO_VERSION = 4.0.1
+MONO_VERSION = 4.0.0
 MONO_SITE = http://download.mono-project.com/sources/mono
 MONO_SOURCE = mono-$(MONO_VERSION).tar.bz2
 MONO_LICENSE = GPLv2 or MIT (compiler, tools), LGPLv2 (runtime libs), MIT (class libs) or commercial