diff --git a/3rd/lua/Makefile b/3rd/lua/Makefile
index 2e7a4120..7430722c 100644
--- a/3rd/lua/Makefile
+++ b/3rd/lua/Makefile
@@ -7,7 +7,7 @@
 PLAT= none
 
 CC= gcc -std=gnu99
-CFLAGS= -O2 -Wall -Wextra -DLUA_COMPAT_5_2 $(SYSCFLAGS) $(MYCFLAGS)
+CFLAGS= -O2 -Wall -Wextra $(SYSCFLAGS) $(MYCFLAGS)
 LDFLAGS= $(SYSLDFLAGS) $(MYLDFLAGS)
 LIBS= -lm $(SYSLIBS) $(MYLIBS)