diff --git a/programs/ssl/ssl_client2.c b/programs/ssl/ssl_client2.c
index 1856cc45f..af3b0d35d 100644
--- a/programs/ssl/ssl_client2.c
+++ b/programs/ssl/ssl_client2.c
@@ -1267,7 +1267,7 @@ send_request:
 
     len = polarssl_snprintf( (char *) buf, sizeof(buf) - 1, GET_REQUEST,
                     opt.request_page );
-    tail_len = strlen( GET_REQUEST_END );
+    tail_len = (int) strlen( GET_REQUEST_END );
 
     /* Add padding to GET request to reach opt.request_size in length */
     if( opt.request_size != DFL_REQUEST_SIZE &&
diff --git a/programs/ssl/ssl_mail_client.c b/programs/ssl/ssl_mail_client.c
index 27c57a17f..8958f18f7 100644
--- a/programs/ssl/ssl_mail_client.c
+++ b/programs/ssl/ssl_mail_client.c
@@ -57,8 +57,8 @@
 #include <unistd.h>
 #else
 #include <io.h>
-#define read _read
-#define write _write
+#define read(fd, buf, len)  _read( fd, (void *)buf, (unsigned int)len )
+#define write(fd, buf, len) _write( fd, (const void *)buf, (unsigned int)len )
 #endif
 
 #if defined(_WIN32) || defined(_WIN32_WCE)
diff --git a/programs/ssl/ssl_server2.c b/programs/ssl/ssl_server2.c
index 5b4d634d3..b99aeb6a0 100644
--- a/programs/ssl/ssl_server2.c
+++ b/programs/ssl/ssl_server2.c
@@ -1791,7 +1791,7 @@ data_exchange:
             unsigned char *larger_buf;
 
             ori_len = ret;
-            extra_len = ssl_get_bytes_avail( &ssl );
+            extra_len = (int) ssl_get_bytes_avail( &ssl );
 
             larger_buf = polarssl_malloc( ori_len + extra_len + 1 );
             if( larger_buf == NULL )