diff --git a/src/jtag/drivers/usbprog.c b/src/jtag/drivers/usbprog.c
index 225a3c59d..7d10d0f40 100644
--- a/src/jtag/drivers/usbprog.c
+++ b/src/jtag/drivers/usbprog.c
@@ -317,7 +317,7 @@ static void usbprog_scan(bool ir_scan, enum scan_type type, uint8_t *buffer, int
 
 	usbprog_jtag_tms_send(usbprog_jtag_handle);
 
-	void (*f)(struct usbprog_jtag *usbprog_jtag, char * buffer, int size);
+	void (*f)(struct usbprog_jtag *usbprog_jtag, char * buffer_local, int size);
 	switch (type) {
 	case SCAN_OUT: f = &usbprog_jtag_write_tdi; break;
 	case SCAN_IN: f = &usbprog_jtag_read_tdo; break;