diff --git a/sys/netinet/in_pcb.h b/sys/netinet/in_pcb.h
index 1f7efd19e868..49b891e33b15 100644
--- a/sys/netinet/in_pcb.h
+++ b/sys/netinet/in_pcb.h
@@ -501,8 +501,6 @@ struct inpcblbgroup {
 	struct inpcb	*il_inp[];			/* (h) */
 };
 
-#define INP_LOCK_INIT(inp, d, t) \
-	rw_init_flags(&(inp)->inp_lock, (t), RW_RECURSE | RW_DUPOK)
 #define INP_LOCK_DESTROY(inp)	rw_destroy(&(inp)->inp_lock)
 #define INP_RLOCK(inp)		rw_rlock(&(inp)->inp_lock)
 #define INP_WLOCK(inp)		rw_wlock(&(inp)->inp_lock)
diff --git a/sys/netinet/sctp_pcb.c b/sys/netinet/sctp_pcb.c
index b7fce09fc661..e1006255204a 100644
--- a/sys/netinet/sctp_pcb.c
+++ b/sys/netinet/sctp_pcb.c
@@ -2498,7 +2498,8 @@ sctp_inpcb_alloc(struct socket *so, uint32_t vrf_id)
 
 	SCTP_INP_INFO_WLOCK();
 	SCTP_INP_LOCK_INIT(inp);
-	INP_LOCK_INIT(&inp->ip_inp.inp, "inp", "sctpinp");
+	rw_init_flags(&inp->ip_inp.inp.inp_lock, "sctpinp",
+	    RW_RECURSE | RW_DUPOK);
 	SCTP_INP_READ_INIT(inp);
 	SCTP_ASOC_CREATE_LOCK_INIT(inp);
 	/* lock the new ep */