diff --git a/backend/epson_usb.c b/backend/epson_usb.c
index b3f652123..be8032610 100644
--- a/backend/epson_usb.c
+++ b/backend/epson_usb.c
@@ -2,7 +2,7 @@
 #include "../include/sane/sanei_usb.h"
 #include "epson_usb.h"
 
-// generated with epson2usb.pl doc/descriptions/epson2.desc
+/* generated with epson2usb.pl doc/descriptions/epson2.desc */
 
 SANE_Word sanei_epson_usb_product_ids[] = {
   0x101, /* GT-7000U, Perfection 636U */