diff --git a/src/network/kernel/qhostaddress.cpp b/src/network/kernel/qhostaddress.cpp
index 3c08717d11..56473e2982 100644
--- a/src/network/kernel/qhostaddress.cpp
+++ b/src/network/kernel/qhostaddress.cpp
@@ -44,7 +44,9 @@
 #include "private/qipaddress_p.h"
 #include "qdebug.h"
 #if defined(Q_OS_WIN)
-#include <winsock2.h>
+# include <winsock2.h>
+#else
+# include <netinet/in.h>
 #endif
 #include "qplatformdefs.h"
 #include "qstringlist.h"
diff --git a/src/network/socket/qnativesocketengine_p.h b/src/network/socket/qnativesocketengine_p.h
index a48fcfa769..67e7038e00 100644
--- a/src/network/socket/qnativesocketengine_p.h
+++ b/src/network/socket/qnativesocketengine_p.h
@@ -56,6 +56,7 @@
 #include "private/qabstractsocketengine_p.h"
 #ifndef Q_OS_WIN
 #  include "qplatformdefs.h"
+#  include <netinet/in.h>
 #else
 #  include <winsock2.h>
 #endif