diff --git a/modules/dns64/dns64.lua b/modules/dns64/dns64.lua
index b4fb1ecb7d1d78f6fbd40a9f19bac4e4b3f552b9..4dc8cb458e95c5f1a552ae6e518da7d123880f15 100644
--- a/modules/dns64/dns64.lua
+++ b/modules/dns64/dns64.lua
@@ -152,7 +152,7 @@ function M.layer.consume(state, req, pkt)
 		end
 	end
 	ffi.C.kr_ranked_rrarray_finalize(req.answ_selected, qry.uid, req.pool)
-	req:set_extended_error(kres.extended_error.FORGED, "BHD4: DNS64 synthesis")
+	req:set_extended_error(kres.extended_error.SYNTHESIZED, "BHD4: from DNS64")
 end
 
 local function hexchar2int(char)