diff --git a/src/output-lua.c b/src/output-lua.c
index 16f599aaf5..55e9110570 100644
--- a/src/output-lua.c
+++ b/src/output-lua.c
@@ -213,8 +213,13 @@ static int LuaPacketLoggerAlerts(ThreadVars *tv, void *thread_data, const Packet
 
         lua_getglobal(td->lua_ctx->luastate, "log");
 
+        void *txptr = NULL;
+        if (p->flow && p->flow->alstate && (pa->flags & PACKET_ALERT_FLAG_TX))
+            txptr = AppLayerParserGetTx(p->proto, p->flow->alproto, p->flow->alstate, pa->tx_id);
+
         LuaStateSetThreadVars(td->lua_ctx->luastate, tv);
         LuaStateSetPacket(td->lua_ctx->luastate, (Packet *)p);
+        LuaStateSetTX(td->lua_ctx->luastate, txptr);
         LuaStateSetFlow(td->lua_ctx->luastate, p->flow);
         LuaStateSetPacketAlert(td->lua_ctx->luastate, (PacketAlert *)pa);