diff --git a/api.h b/api.h
index 904877a..0fdd5a1 100644
--- a/api.h
+++ b/api.h
@@ -32,6 +32,11 @@
 
 #ifndef LIB3270_API_INCLUDED
 
+#ifdef WIN32
+	#include <winsock2.h>
+	#include <windows.h>
+#endif // WIN32
+
 #ifdef __cplusplus
 	extern "C" {
 #endif
diff --git a/ft.c b/ft.c
index c3c84b5..cbbebca 100644
--- a/ft.c
+++ b/ft.c
@@ -29,6 +29,11 @@
  *
  */
 
+#ifdef WIN32
+	#include <winsock2.h>
+	#include <windows.h>
+#endif // WIN32
+
 #include <lib3270/config.h>
 #include <lib3270.h>
 #include <lib3270/filetransfer.h>
diff --git a/ft_dft.c b/ft_dft.c
index d9adb15..1a4a2f1 100644
--- a/ft_dft.c
+++ b/ft_dft.c
@@ -34,6 +34,11 @@
  *		File transfer: DFT-style data processing functions
  */
 
+#ifdef WIN32
+	#include <winsock2.h>
+	#include <windows.h>
+#endif // WIN32
+
 #include <lib3270.h>
 #include "private.h"
 
diff --git a/html.c b/html.c
index 761ebda..38bad86 100644
--- a/html.c
+++ b/html.c
@@ -25,12 +25,16 @@
  * perry.werneck@gmail.com	(Alexandre Perry de Souza Werneck)
  *
  */
+#ifdef WIN32
+	#include <winsock2.h>
+	#include <windows.h>
+#endif // WIN32
 
  #include <string.h>
  #include <stdlib.h>
  #include <lib3270.h>
  #include <lib3270/session.h>
-#include "3270ds.h"
+ #include "3270ds.h"
  #include <lib3270/html.h>
 
  #include "private.h"
diff --git a/log.c b/log.c
index 9c25ec1..f7c7587 100644
--- a/log.c
+++ b/log.c
@@ -30,6 +30,11 @@
  *
  */
 
+#ifdef WIN32
+	#include <winsock2.h>
+	#include <windows.h>
+#endif // WIN32
+
 #include <stdio.h>
 #include <stdarg.h>
 #include <lib3270/config.h>
diff --git a/macros.c b/macros.c
index 936e44f..e459704 100644
--- a/macros.c
+++ b/macros.c
@@ -30,6 +30,11 @@
  *
  */
 
+#ifdef WIN32
+	#include <winsock2.h>
+	#include <windows.h>
+#endif // WIN32
+
  #include <errno.h>
  #include <string.h>
  #include <stdio.h>
diff --git a/private.h b/private.h
index 59bfecf..09cd3ff 100644
--- a/private.h
+++ b/private.h
@@ -27,6 +27,11 @@
  *
  */
 
+#ifdef WIN32
+	#include <winsock2.h>
+	#include <windows.h>
+#endif // WIN32
+
 /* Autoconf settings. */
 #include <lib3270/config.h>		/* autoconf settings */
 #include <lib3270.h>			/* lib3270 API calls and defs */
diff --git a/toggles.c b/toggles.c
index b9b5758..b097b53 100644
--- a/toggles.c
+++ b/toggles.c
@@ -39,7 +39,11 @@
 #include <errno.h>
 #include <sys/types.h>
 
-#ifndef WIN32
+#ifdef WIN32
+	#include <winsock2.h>
+	#include <windows.h>
+	#include <ws2tcpip.h>
+#else
 	#include <sys/socket.h>
 #endif // !WIN32
 
--
libgit2 0.21.2