diff --git a/sys/netinet/sctp_output.c b/sys/netinet/sctp_output.c
index 4ca3978df1e0..b9750b9d50e0 100644
--- a/sys/netinet/sctp_output.c
+++ b/sys/netinet/sctp_output.c
@@ -12384,8 +12384,8 @@ sctp_lower_sosend(struct socket *so,
 
 	t_inp = inp = (struct sctp_inpcb *)so->so_pcb;
 	if (inp == NULL) {
-		SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP_OUTPUT, EFAULT);
-		error = EFAULT;
+		SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP_OUTPUT, EINVAL);
+		error = EINVAL;
 		if (i_pak) {
 			SCTP_RELEASE_PKT(i_pak);
 		}
@@ -12432,8 +12432,8 @@ sctp_lower_sosend(struct socket *so,
 	if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) &&
 	    (inp->sctp_socket->so_qlimit)) {
 		/* The listener can NOT send */
-		SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP_OUTPUT, EFAULT);
-		error = EFAULT;
+		SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP_OUTPUT, ENOTCONN);
+		error = ENOTCONN;
 		goto out_unlocked;
 	}
 	if ((use_rcvinfo) && srcv) {
@@ -12566,8 +12566,8 @@ sctp_lower_sosend(struct socket *so,
 		if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
 		    (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
 			/* Should I really unlock ? */
-			SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP_OUTPUT, EFAULT);
-			error = EFAULT;
+			SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP_OUTPUT, EINVAL);
+			error = EINVAL;
 			goto out_unlocked;
 
 		}
@@ -12596,6 +12596,12 @@ sctp_lower_sosend(struct socket *so,
 		}
 	}
 	if (stcb == NULL) {
+		if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
+		    (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
+			SCTP_LTRACE_ERR_RET(inp, stcb, net, SCTP_FROM_SCTP_OUTPUT, ENOTCONN);
+			error = ENOTCONN;
+			goto out_unlocked;
+		}
 		if (addr == NULL) {
 			SCTP_LTRACE_ERR_RET(inp, stcb, net, SCTP_FROM_SCTP_OUTPUT, ENOENT);
 			error = ENOENT;