diff --git a/socket/socket_tcp4.c b/socket/socket_tcp4.c
index 2ce3b01..bdf185d 100644
--- a/socket/socket_tcp4.c
+++ b/socket/socket_tcp4.c
@@ -11,7 +11,7 @@
 int socket_tcp4(void) {
   int s;
 #ifdef SOCK_NONBLOCK
-  if ((s=socket(PF_INET,SOCK_STREAM|SOCK_NONBLOCK,IPPROTO_TCP))>-1 || errno!=EINVAL) return -1;
+  if ((s=socket(PF_INET,SOCK_STREAM|SOCK_NONBLOCK,IPPROTO_TCP))>-1 || errno!=EINVAL) return s;
 #endif
   s=socket_tcp4b();
   if (s==-1) return -1;
diff --git a/socket/socket_tcp6.c b/socket/socket_tcp6.c
index 129fc2a..f0cfd01 100644
--- a/socket/socket_tcp6.c
+++ b/socket/socket_tcp6.c
@@ -12,7 +12,7 @@
 int socket_tcp6(void) {
   int s;
 #if defined(LIBC_HAS_IP6) && defined(SOCK_NONBLOCK)
-  if ((s=socket(PF_INET6,SOCK_STREAM|SOCK_NONBLOCK,IPPROTO_TCP))>-1 || errno!=EINVAL) return -1;
+  if ((s=socket(PF_INET6,SOCK_STREAM|SOCK_NONBLOCK,IPPROTO_TCP))>-1 || errno!=EINVAL) return s;
 #endif
   s=socket_tcp6b();
   if (s==-1) return -1;