diff --git a/modules/stats/stats.c b/modules/stats/stats.c
index 49b87d5951613c4a186885387b5e4544ca99ee24..357b4d5e2346454bef5a47aeec1635136f808a83 100644
--- a/modules/stats/stats.c
+++ b/modules/stats/stats.c
@@ -30,6 +30,11 @@
 #include "lib/module.h"
 #include "lib/layer.h"
 
+/** @internal Compatibility wrapper for Lua < 5.2 */
+#if LUA_VERSION_NUM < 502
+#define lua_rawlen(L, obj) lua_objlen((L), (obj))
+#endif
+
 /* Defaults */
 #define DEBUG_MSG(qry, fmt...) QRDEBUG(qry, "stat",  fmt)