diff --git a/util/sockets.c b/util/sockets.c
index 0b110d5..8cb4811 100644
--- a/util/sockets.c
+++ b/util/sockets.c
@@ -16,6 +16,10 @@
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  */
 
+#ifndef __Windows__
+#include <sys/select.h>
+#endif
+
 #include <errno.h>
 #include <stdlib.h>
 #include <string.h>