1 files changed, 4 insertions, 0 deletions

diff --git a/src/thread.h b/src/thread.h
index d155837ccad..91bab8284e6 100644
--- a/src/thread.h
+++ b/src/thread.h
@@ -21,6 +21,10 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 
 #include "regex.h"
 
+#ifdef WINDOWSNT
+#include <sys/socket.h>
+#endif
+
 #include "sysselect.h"          /* FIXME */
 #include "systime.h"            /* FIXME */