diff --git a/codec/mjpeg/jpeg.go b/codec/mjpeg/jpeg.go
index 1fec0d89..4e681e76 100644
--- a/codec/mjpeg/jpeg.go
+++ b/codec/mjpeg/jpeg.go
@@ -320,7 +320,7 @@ func writeHeader(p []byte, _type, width, height, nbqTab int, dri uint16, qtable
 	if dri != 0 {
 		binary.BigEndian.PutUint16(p[idx:], 0xff00|codeDRI)
 		binary.BigEndian.PutUint16(p[idx+2:], 4)
-		binary.BigEndian.PutUint16(p[idx+4:], uint16(dri))
+		binary.BigEndian.PutUint16(p[idx+4:], dri)
 		idx += 6
 	}