diff --git a/sys/dev/usb/serial/u3g.c b/sys/dev/usb/serial/u3g.c
index ffe88126dfa4..e2c7cb08502b 100644
--- a/sys/dev/usb/serial/u3g.c
+++ b/sys/dev/usb/serial/u3g.c
@@ -71,7 +71,7 @@ SYSCTL_INT(_hw_usb_u3g, OID_AUTO, debug, CTLFLAG_RW,
     &u3g_debug, 0, "Debug level");
 #endif
 
-#define	U3G_MAXPORTS		8
+#define	U3G_MAXPORTS		12
 #define	U3G_CONFIG_INDEX	0
 #define	U3G_BSIZE		2048