diff --git a/lib/config-win32.h b/lib/config-win32.h
index 59dd44130..9b3d531d7 100644
--- a/lib/config-win32.h
+++ b/lib/config-win32.h
@@ -136,6 +136,9 @@
 /* Define if you have the getservbyname function.  */
 #define HAVE_GETSERVBYNAME 1
 
+/* Define if you have the getprotobyname function.  */
+#define HAVE_GETPROTOBYNAME
+
 /* Define if you have the gettimeofday function.  */
 /* #define HAVE_GETTIMEOFDAY 1 */
 
diff --git a/lib/config.dj b/lib/config.dj
index 04cf4db41..6fc9513d4 100644
--- a/lib/config.dj
+++ b/lib/config.dj
@@ -20,6 +20,7 @@
 #define HAVE_GETHOSTNAME       1
 #define HAVE_GETPASS           1
 #define HAVE_GETSERVBYNAME     1
+#define HAVE_GETPROTOBYNAME    1
 #define HAVE_GETTIMEOFDAY      1
 #define HAVE_INET_ADDR         1
 #define HAVE_INET_NTOA         1
diff --git a/lib/connect.c b/lib/connect.c
index 787951136..427a87431 100644
--- a/lib/connect.c
+++ b/lib/connect.c
@@ -619,7 +619,15 @@ static void tcpnodelay(struct connectdata *conn,
 #ifdef TCP_NODELAY
   struct SessionHandle *data= conn->data;
   socklen_t onoff = (socklen_t) data->set.tcp_nodelay;
-  if(setsockopt(sockfd, IPPROTO_TCP, TCP_NODELAY, (void *)&onoff,
+  int proto = IPPROTO_TCP;
+
+#ifdef HAVE_GETPROTOBYNAME
+  struct protoent *pe = getprotobyname("tcp");
+  if (pe)
+    proto = p->p_proto;
+#endif
+
+  if(setsockopt(sockfd, proto, TCP_NODELAY, (void *)&onoff,
                 sizeof(onoff)) < 0)
     infof(data, "Could not set TCP_NODELAY: %s\n",
           Curl_strerror(conn, Curl_ourerrno()));