diff --git a/libavcodec/libwebpenc_animencoder.c b/libavcodec/libwebpenc_animencoder.c
index e9582016d3..7c1ac66b25 100644
--- a/libavcodec/libwebpenc_animencoder.c
+++ b/libavcodec/libwebpenc_animencoder.c
@@ -41,7 +41,7 @@ static av_cold int libwebp_anim_encode_init(AVCodecContext *avctx)
     int ret = ff_libwebp_encode_init_common(avctx);
     if (!ret) {
         LibWebPAnimContext *s = avctx->priv_data;
-        WebPAnimEncoderOptions enc_options;
+        WebPAnimEncoderOptions enc_options = { 0 };
         WebPAnimEncoderOptionsInit(&enc_options);
         // TODO(urvang): Expose some options on command-line perhaps.
         s->enc = WebPAnimEncoderNew(avctx->width, avctx->height, &enc_options);