diff --git a/src/tool_doswin.c b/src/tool_doswin.c
index 4ee7ae5828..5cc885137f 100644
--- a/src/tool_doswin.c
+++ b/src/tool_doswin.c
@@ -708,7 +708,7 @@ static DWORD WINAPI win_stdin_thread_func(void *thread_data)
 {
   struct win_thread_data *tdata = (struct win_thread_data *)thread_data;
   DWORD n;
-  int nwritten;
+  ssize_t nwritten;
   char buffer[BUFSIZ];
   BOOL r;
 
@@ -726,7 +726,7 @@ static DWORD WINAPI win_stdin_thread_func(void *thread_data)
 
   sclose(tdata->socket_l);
   tdata->socket_l = CURL_SOCKET_BAD;
-  if(shutdown(socket_w, SD_RECEIVE)) {
+  if(shutdown(socket_w, SHUT_RD)) {
     errorf("shutdown error: %d", SOCKERRNO);
     goto ThreadCleanup;
   }
@@ -760,7 +760,8 @@ ThreadCleanup:
 curl_socket_t win32_stdin_read_thread(void)
 {
   bool r;
-  int rc = 0, socksize = 0;
+  int rc = 0;
+  curl_socklen_t socksize = 0;
   struct win_thread_data *tdata = NULL;
   struct sockaddr_in selfaddr;
   static HANDLE stdin_thread = NULL;
@@ -791,7 +792,7 @@ curl_socket_t win32_stdin_read_thread(void)
     socksize = sizeof(selfaddr);
     memset(&selfaddr, 0, socksize);
     selfaddr.sin_family = AF_INET;
-    selfaddr.sin_addr.S_un.S_addr = htonl(INADDR_LOOPBACK);
+    selfaddr.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
     /* Bind to any available loopback port */
     if(bind(tdata->socket_l, (const struct sockaddr *)&selfaddr, socksize)) {
       errorf("bind error: %d", SOCKERRNO);
@@ -846,7 +847,7 @@ curl_socket_t win32_stdin_read_thread(void)
       break;
     }
 
-    if(shutdown(socket_r, SD_SEND)) {
+    if(shutdown(socket_r, SHUT_WR)) {
       errorf("shutdown error: %d", SOCKERRNO);
       break;
     }