diff --git a/dediprog.c b/dediprog.c
index 1f7c3d029..827d5e495 100644
--- a/dediprog.c
+++ b/dediprog.c
@@ -39,7 +39,7 @@
 #define FIRMWARE_VERSION(x,y,z) ((x << 16) | (y << 8) | z)
 #define DEFAULT_TIMEOUT 3000
 #define DEDIPROG_ASYNC_TRANSFERS 8 /* at most 8 asynchronous transfers */
-#define REQTYPE_OTHER_OUT (LIBUSB_ENDPOINT_IN | LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_RECIPIENT_OTHER)	/* 0x43 */
+#define REQTYPE_OTHER_OUT (LIBUSB_ENDPOINT_OUT | LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_RECIPIENT_OTHER)	/* 0x43 */
 #define REQTYPE_OTHER_IN (LIBUSB_ENDPOINT_IN | LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_RECIPIENT_OTHER)	/* 0xC3 */
 #define REQTYPE_EP_OUT (LIBUSB_ENDPOINT_OUT | LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_RECIPIENT_ENDPOINT)	/* 0x42 */
 #define REQTYPE_EP_IN (LIBUSB_ENDPOINT_IN | LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_RECIPIENT_ENDPOINT)	/* 0xC2 */