diff --git a/3rd/lua/Makefile b/3rd/lua/Makefile
index ddf7b349..0b7c8781 100644
--- a/3rd/lua/Makefile
+++ b/3rd/lua/Makefile
@@ -19,7 +19,7 @@ SYSCFLAGS=
 SYSLDFLAGS=
 SYSLIBS=
 
-MYCFLAGS=-I../../skynet-src
+MYCFLAGS=-I../../skynet-src -g
 MYLDFLAGS=
 MYLIBS=
 MYOBJS=