diff --git a/config.d/header_files.m4 b/config.d/header_files.m4
index ee969e046..6ac640ca1 100644
--- a/config.d/header_files.m4
+++ b/config.d/header_files.m4
@@ -15,7 +15,7 @@ AC_CHECK_HEADERS(
 	netdb.h netinet/in.h process.h pthread.h pwd.h rpc/types.h setjmp.h \
 	signal.h stdarg.h stdio.h stdlib.h string.h strings.h sys/asoundlib.h \
 	sys/audioio.h sys/filio.h sys/ioctl.h sys/io.h sys/ipc.h sys/mman.h \
-	sys/param.h sys/poll.h sys/shm.h sys/signal.h sys/socket.h \
+	sys/param.h sys/poll.h sys/select.h sys/shm.h sys/signal.h sys/socket.h \
 	sys/soundcard.h sys/stat.h sys/time.h sys/types.h sys/uio.h termios.h \
 	time.h unistd.h vgakeyboard.h vgamouse.h windows.h winsock.h
 )
diff --git a/libs/util/sys.c b/libs/util/sys.c
index 33434db02..47c46d203 100644
--- a/libs/util/sys.c
+++ b/libs/util/sys.c
@@ -52,6 +52,9 @@
 #ifdef HAVE_SYS_MMAN_H
 # include <sys/mman.h>
 #endif
+#ifdef HAVE_SYS_SELECT_H
+# include <sys/select.h>
+#endif
 #ifdef HAVE_PWD_H
 # include <pwd.h>
 #endif