diff --git a/drivers/usb/serial/ssu100.c b/drivers/usb/serial/ssu100.c
index 68c18fdfc6da..e986002b3844 100644
--- a/drivers/usb/serial/ssu100.c
+++ b/drivers/usb/serial/ssu100.c
@@ -46,7 +46,7 @@
 #define FULLPWRBIT          0x00000080
 #define NEXT_BOARD_POWER_BIT        0x00000004
 
-static int debug = 1;
+static int debug;
 
 /* Version Information */
 #define DRIVER_VERSION "v0.1"