diff --git a/src/lua.h b/src/lua.h
index 6ffa16d0..2a548c5a 100644
--- a/src/lua.h
+++ b/src/lua.h
@@ -261,7 +261,7 @@ LUA_API void lua_setallocf (lua_State *L, lua_Alloc f, void *ud);
 
 #define lua_pushcfunction(L,f)	lua_pushcclosure(L, (f), 0)
 
-#define lua_strlen(L,i)		lua_objlen(L, (i))
+#define lua_strlen(L,i)		lua_rawlen(L, (i))
 
 #define lua_isfunction(L,n)	(lua_type(L, (n)) == LUA_TFUNCTION)
 #define lua_istable(L,n)	(lua_type(L, (n)) == LUA_TTABLE)