diff --git a/resty/ipmatcher.lua b/resty/ipmatcher.lua
index 19c8212..f9b46b8 100644
--- a/resty/ipmatcher.lua
+++ b/resty/ipmatcher.lua
@@ -34,7 +34,7 @@ elseif ffi.os == "Windows" then
 end
 
 
-local _M = {_VERSION = 0.3}
+local _M = {}
 
 
 ffi_cdef[[