diff --git a/drivers/staging/cpc-usb/cpcusb.h b/drivers/staging/cpc-usb/cpcusb.h
index e5273ddd9e0a..6bdf30be239f 100644
--- a/drivers/staging/cpc-usb/cpcusb.h
+++ b/drivers/staging/cpc-usb/cpcusb.h
@@ -75,7 +75,7 @@ typedef struct CPC_USB {
 #define CPC_DRIVER_VERSION "0.724"
 #define CPC_DRIVER_SERIAL  "not applicable"
 
-#define OBUF_SIZE 255		// 4096
+#define OBUF_SIZE 255		/* 4096 */
 
 /* read timeouts -- RD_NAK_TIMEOUT * RD_EXPIRE = Number of seconds */
 #define RD_NAK_TIMEOUT (10*HZ)	/* Default number of X seconds to wait */