diff --git a/common/usb_storage.c b/common/usb_storage.c
index 9f312653efb43eb27b5d2d6b7bd7783e244ccaff..76949b85c0f2793e4bccb4f1dbb63a04b259aed8 100644
--- a/common/usb_storage.c
+++ b/common/usb_storage.c
@@ -181,7 +181,7 @@ block_dev_desc_t *usb_stor_get_dev(int index)
 
 void usb_show_progress(void)
 {
-	printf(".");
+	debug(".");
 }
 
 /*******************************************************************************
@@ -1081,7 +1081,7 @@ retry_it:
 
 	usb_disable_asynch(0); /* asynch transfer allowed */
 	if (blkcnt >= USB_MAX_READ_BLK)
-		printf("\n");
+		debug("\n");
 	return blkcnt;
 }
 
@@ -1161,7 +1161,7 @@ retry_it:
 
 	usb_disable_asynch(0); /* asynch transfer allowed */
 	if (blkcnt >= USB_MAX_WRITE_BLK)
-		printf("\n");
+		debug("\n");
 	return blkcnt;
 
 }