diff --git a/sub/sd_lavc.c b/sub/sd_lavc.c
index 26318cf4b4..59e10ab5a9 100644
--- a/sub/sd_lavc.c
+++ b/sub/sd_lavc.c
@@ -113,6 +113,8 @@ static int init(struct sd *sd)
 
  error:
     MP_FATAL(sd, "Could not open libavcodec subtitle decoder\n");
+    if (ctx)
+        av_free(ctx->extradata);
     av_free(ctx);
     talloc_free(priv);
     return -1;