diff --git a/cfg/yolov3-tiny.cfg b/cfg/yolov3-tiny.cfg
index 42c0fcf9195..cfca3cfa641 100644
--- a/cfg/yolov3-tiny.cfg
+++ b/cfg/yolov3-tiny.cfg
@@ -172,7 +172,7 @@ filters=255
 activation=linear
 
 [yolo]
-mask = 1,2,3
+mask = 0,1,2
 anchors = 10,14,  23,27,  37,58,  81,82,  135,169,  344,319
 classes=80
 num=6