diff --git a/config/config.c b/config/config.c
index 523327d04..76191abd4 100644
--- a/config/config.c
+++ b/config/config.c
@@ -29,6 +29,7 @@
 #define DBUS_API_SUBJECT_TO_CHANGE
 #include <dbus/dbus.h>
 #include <string.h>
+#include <sys/select.h>
 
 #include <X11/X.h>