diff --git a/usr.sbin/usbd/usbd.c b/usr.sbin/usbd/usbd.c
index 61157130be0..30c1526bebc 100644
--- a/usr.sbin/usbd/usbd.c
+++ b/usr.sbin/usbd/usbd.c
@@ -81,7 +81,7 @@
 /* Maximum number of USB busses expected to be in a system
  * XXX should be replaced by dynamic allocation.
  */
-#define MAXUSBDEV	4
+#define MAXUSBDEV	40
 
 /* Sometimes a device does not respond in time for interrupt
  * driven explore to find it.  Therefore we run an exploration