diff --git a/src/platform/posix/posix_peerid.h b/src/platform/posix/posix_peerid.h
index 9b5a24bf1..57e9abff4 100644
--- a/src/platform/posix/posix_peerid.h
+++ b/src/platform/posix/posix_peerid.h
@@ -19,8 +19,7 @@
 #include "core/nng_impl.h"
 #include <sys/types.h>
 
-int
-nni_posix_peerid(int fd,
-    uint64_t *euid, uint64_t *egid, uint64_t *prid, uint64_t *znid);
+int nni_posix_peerid(
+    int fd, uint64_t *euid, uint64_t *egid, uint64_t *prid, uint64_t *znid);
 
 #endif // PLATFORM_POSIX_PEERID_H
\ No newline at end of file
diff --git a/src/sp/transport/socket/sockfd.c b/src/sp/transport/socket/sockfd.c
index 98a01d1fd..2db052acf 100644
--- a/src/sp/transport/socket/sockfd.c
+++ b/src/sp/transport/socket/sockfd.c
@@ -873,18 +873,8 @@ sfd_tran_ep_set_recvmaxsz(void *arg, const void *v, size_t sz, nni_opt_type t)
 	size_t       val;
 	int          rv;
 	if ((rv = nni_copyin_size(&val, v, sz, 0, NNI_MAXSZ, t)) == 0) {
-		sfd_tran_pipe *p;
 		nni_mtx_lock(&ep->mtx);
 		ep->rcvmax = val;
-		NNI_LIST_FOREACH (&ep->waitpipes, p) {
-			p->rcvmax = val;
-		}
-		NNI_LIST_FOREACH (&ep->negopipes, p) {
-			p->rcvmax = val;
-		}
-		NNI_LIST_FOREACH (&ep->busypipes, p) {
-			p->rcvmax = val;
-		}
 		nni_mtx_unlock(&ep->mtx);
 #ifdef NNG_ENABLE_STATS
 		nni_stat_set_value(&ep->st_rcv_max, val);
diff --git a/src/sp/transport/socket/sockfd_test.c b/src/sp/transport/socket/sockfd_test.c
index bcd772165..c12d44660 100644
--- a/src/sp/transport/socket/sockfd_test.c
+++ b/src/sp/transport/socket/sockfd_test.c
@@ -14,6 +14,7 @@
 
 #ifdef NNG_PLATFORM_POSIX
 #include <unistd.h>
+#include <fcntl.h>
 #ifdef NNG_PLATFORM_SUNOS
 #include <zone.h>
 #endif
@@ -417,6 +418,25 @@ test_sfd_fd_option_type(void)
 	NUTS_CLOSE(s);
 }
 
+void
+test_sfd_fd_dev_zero(void)
+{
+#ifdef NNG_PLATFORM_POSIX
+	nng_socket s;
+	nng_listener l;
+	int fd;
+
+	// dev/zero produces a stream of zero bytes leading to protocol error
+	NUTS_ASSERT((fd = open("/dev/zero", O_RDONLY, 0777)) >= 0);
+
+	NUTS_OPEN(s);
+	NUTS_PASS(nng_listener_create(&l, s, "socket://"));
+	NUTS_PASS(nng_listener_set_int(l, NNG_OPT_SOCKET_FD, fd));
+	nng_msleep(100);
+	NUTS_CLOSE(s);
+#endif
+}
+
 NUTS_TESTS = {
 	{ "socket connect fail", test_sfd_connect_fail },
 	{ "socket malformed address", test_sfd_malformed_address },
@@ -434,6 +454,7 @@ NUTS_TESTS = {
 	{ "socket pipe peer id", test_sockfd_pipe_peer },
 	{ "socket listen full", test_sfd_listen_full },
 	{ "socket bad fd type", test_sfd_fd_option_type },
+	{ "socket dev zero", test_sfd_fd_dev_zero },
 #endif
 
 	{ NULL, NULL },