diff --git a/libavcodec/mjpegdec.c b/libavcodec/mjpegdec.c
index feb2f897a50a6b659026891b19dce78a16357112..78af858695f0e58daad6cfbabf6f94d58aafcec4 100644
--- a/libavcodec/mjpegdec.c
+++ b/libavcodec/mjpegdec.c
@@ -852,7 +852,7 @@ static int ljpeg_decode_yuv_scan(MJpegDecodeContext *s, int predictor,
 
     point_transform += bits - s->bits;
 
-    av_assert0(nb_components==1 || nb_components==3);
+    av_assert0(nb_components>=1 && nb_components<=3);
 
     for (mb_y = 0; mb_y < s->mb_height; mb_y++) {
         for (mb_x = 0; mb_x < s->mb_width; mb_x++) {