diff --git a/drivers/usb/gadget/f_acm.c b/drivers/usb/gadget/f_acm.c
index 388f73d..b2ddd1a 100644
--- a/drivers/usb/gadget/f_acm.c
+++ b/drivers/usb/gadget/f_acm.c
@@ -579,7 +579,7 @@
 
 	/* Wait for a character to arrive. */
 	while (!acm_stdio_tstc(dev))
-		WATCHDOG_RESET();
+		schedule();
 
 	buf_pop(&f_acm->rx_buf, &c, 1);
 
@@ -639,7 +639,7 @@
 		if (ctrlc())
 			return -ECANCELED;
 
-		WATCHDOG_RESET();
+		schedule();
 	}
 
 	return 0;