diff --git a/libavcodec/avs.c b/libavcodec/avs.c
index 6ff6d26be3..8e70a90c9c 100644
--- a/libavcodec/avs.c
+++ b/libavcodec/avs.c
@@ -160,7 +160,7 @@ static av_cold int avs_decode_init(AVCodecContext * avctx)
 {
     AvsContext *s = avctx->priv_data;
     avctx->pix_fmt = AV_PIX_FMT_PAL8;
-    avcodec_set_dimensions(avctx, 318, 198);
+    ff_set_dimensions(avctx, 318, 198);
     avcodec_get_frame_defaults(&s->picture);
     return 0;
 }