diff --git a/dlls/ws2_32/socket.c b/dlls/ws2_32/socket.c
index 9f140a6ee44..80665ff57a4 100644
--- a/dlls/ws2_32/socket.c
+++ b/dlls/ws2_32/socket.c
@@ -1725,6 +1725,12 @@ int WINAPI getsockopt( SOCKET s, int level, int optname, char *optval, int *optl
         switch(optname)
         {
         case TCP_NODELAY:
+            if (*optlen < 1 || !optval)
+            {
+                SetLastError( WSAEFAULT );
+                return SOCKET_ERROR;
+            }
+            *optlen = 1;
             return server_getsockopt( s, IOCTL_AFD_WINE_GET_TCP_NODELAY, optval, optlen );
 
         default:
@@ -2998,14 +3004,14 @@ int WINAPI setsockopt( SOCKET s, int level, int optname, const char *optval, int
         switch(optname)
         {
         case TCP_NODELAY:
-        {
-            INT nodelay = *optval;
-            if (optlen <= 0) {
-                SetLastError(WSAEFAULT);
+            if (optlen <= 0 || !optval)
+            {
+                SetLastError( optlen && optval ? WSAENOBUFS : WSAEFAULT );
                 return SOCKET_ERROR;
             }
-            return server_setsockopt( s, IOCTL_AFD_WINE_SET_TCP_NODELAY, (char*)&nodelay, sizeof(nodelay) );
-        }
+            value = *optval;
+            return server_setsockopt( s, IOCTL_AFD_WINE_SET_TCP_NODELAY, (char*)&value, sizeof(value) );
+
         default:
             FIXME("Unknown IPPROTO_TCP optname 0x%08x\n", optname);
             SetLastError(WSAENOPROTOOPT);
diff --git a/dlls/ws2_32/tests/sock.c b/dlls/ws2_32/tests/sock.c
index dfa1640e8bc..afdfc68905b 100644
--- a/dlls/ws2_32/tests/sock.c
+++ b/dlls/ws2_32/tests/sock.c
@@ -1181,6 +1181,7 @@ static void test_set_getsockopt(void)
         {AF_INET, SOCK_STREAM, SOL_SOCKET, SO_SNDBUF, FALSE, {1, 2, 4}, {0xdeadbe00, 0xdead0000}, TRUE},
         {AF_INET, SOCK_STREAM, SOL_SOCKET, SO_SNDTIMEO, FALSE, {1, 2, 4}, {0}, TRUE},
         {AF_INET, SOCK_STREAM, SOL_SOCKET, SO_OPENTYPE, FALSE, {1, 2, 4}, {0}, TRUE},
+        {AF_INET, SOCK_STREAM, IPPROTO_TCP, TCP_NODELAY, TRUE, {1, 1, 1}, {0}, TRUE},
         {AF_INET, SOCK_DGRAM, IPPROTO_IP, IP_MULTICAST_LOOP, TRUE, {1, 1, 4}, {0}, TRUE, TRUE},
         {AF_INET, SOCK_DGRAM, IPPROTO_IP, IP_MULTICAST_TTL, TRUE, {1, 1, 4}, {0}, FALSE},
         {AF_INET, SOCK_DGRAM, IPPROTO_IP, IP_TOS, TRUE, {1, 1, 4}, {0}, FALSE},