diff --git a/sys/dev/lnc/if_lnc.c b/sys/dev/lnc/if_lnc.c
index bff0d53e5c0..d6f90607acf 100644
--- a/sys/dev/lnc/if_lnc.c
+++ b/sys/dev/lnc/if_lnc.c
@@ -1713,7 +1713,7 @@ lnc_start(struct ifnet *ifp)
 			desc = sc->trans_ring + sc->next_to_send;
 			len = mbuf_to_buffer(head, desc->buff.data);
 			desc->md->md3 = 0;
-			desc->md->md2 = -max(len, ETHER_MIN_LEN);
+			desc->md->md2 = -max(len, ETHER_MIN_LEN - ETHER_CRC_LEN);
 			desc->md->md1 |= OWN | STP | ENP;
 			INC_MD_PTR(sc->next_to_send, sc->ntdre)
 		}
diff --git a/sys/i386/isa/if_lnc.c b/sys/i386/isa/if_lnc.c
index bff0d53e5c0..d6f90607acf 100644
--- a/sys/i386/isa/if_lnc.c
+++ b/sys/i386/isa/if_lnc.c
@@ -1713,7 +1713,7 @@ lnc_start(struct ifnet *ifp)
 			desc = sc->trans_ring + sc->next_to_send;
 			len = mbuf_to_buffer(head, desc->buff.data);
 			desc->md->md3 = 0;
-			desc->md->md2 = -max(len, ETHER_MIN_LEN);
+			desc->md->md2 = -max(len, ETHER_MIN_LEN - ETHER_CRC_LEN);
 			desc->md->md1 |= OWN | STP | ENP;
 			INC_MD_PTR(sc->next_to_send, sc->ntdre)
 		}