diff --git a/include/linux/usb/serial.h b/include/linux/usb/serial.h
index 85b475933848958d7c8b2806d4477c4ddd0150f8..ee4394d8932f2eb94815f1bb785f0cdf37a31f5b 100644
--- a/include/linux/usb/serial.h
+++ b/include/linux/usb/serial.h
@@ -20,7 +20,7 @@
 #include <linux/kfifo.h>
 
 /* The maximum number of ports one device can grab at once */
-#define MAX_NUM_PORTS		8
+#define MAX_NUM_PORTS		16
 
 /* parity check flag */
 #define RELEVANT_IFLAG(iflag)	(iflag & (IGNBRK|BRKINT|IGNPAR|PARMRK|INPCK))