diff --git a/libavcodec/webp.c b/libavcodec/webp.c
index c92539fd93..7fb71d8f24 100644
--- a/libavcodec/webp.c
+++ b/libavcodec/webp.c
@@ -1325,6 +1325,8 @@ static int vp8_lossy_decode_frame(AVCodecContext *avctx, AVFrame *p,
     pkt.size = data_size;
 
     ret = ff_vp8_decode_frame(avctx, p, got_frame, &pkt);
+    if (ret < 0)
+        return ret;
     if (s->has_alpha) {
         ret = vp8_lossy_decode_alpha(avctx, p, s->alpha_data,
                                      s->alpha_data_size);