diff --git a/poc/avr_usbload/commandline/snesuploader.c b/poc/avr_usbload/commandline/snesuploader.c
index 5d2fcff..f7be0b5 100644
--- a/poc/avr_usbload/commandline/snesuploader.c
+++ b/poc/avr_usbload/commandline/snesuploader.c
@@ -19,7 +19,7 @@ respectively.
 */
 
 
-#define BUFFER_SIZE     8
+#define BUFFER_SIZE     4
 #define BUFFER_CRC      (1024 * 64)
 #define BANK_SIZE       (1<<15)
 
diff --git a/poc/avr_usbload/usbconfig.h b/poc/avr_usbload/usbconfig.h
index 26cbfb1..9235795 100644
--- a/poc/avr_usbload/usbconfig.h
+++ b/poc/avr_usbload/usbconfig.h
@@ -97,7 +97,7 @@ section at the end of this file).
  * it is required by the standard. We have made it a config option because it
  * bloats the code considerably.
  */
-#define USB_CFG_SUPPRESS_INTR_CODE      0
+#define USB_CFG_SUPPRESS_INTR_CODE      1
 /* Define this to 1 if you want to declare interrupt-in endpoints, but don't
  * want to send any data over them. If this macro is defined to 1, functions
  * usbSetInterrupt() and usbSetInterrupt3() are omitted. This is useful if