diff --git a/sys/dev/puc/pucdata.c b/sys/dev/puc/pucdata.c
index 829600ad90c1..7c7248be9fdc 100644
--- a/sys/dev/puc/pucdata.c
+++ b/sys/dev/puc/pucdata.c
@@ -1116,7 +1116,7 @@ puc_config_timedia(struct puc_softc *sc, enum puc_cfg_cmd cmd, int port,
 		*res = (port == 1 || port == 3) ? 8 : 0;
 		return (0);
 	case PUC_CFG_GET_RID:
-		*res = 0x10 + ((port > 3) ? port - 2 : port >> 1);
+		*res = 0x10 + ((port > 3) ? port - 2 : port >> 1) * 4;
 		return (0);
 	case PUC_CFG_GET_TYPE:
 		*res = PUC_TYPE_SERIAL;