diff --git a/libavfilter/avfilter.h b/libavfilter/avfilter.h
index 3eaa8a4089..49b4f7a939 100644
--- a/libavfilter/avfilter.h
+++ b/libavfilter/avfilter.h
@@ -947,7 +947,7 @@ AVFilterContext *avfilter_graph_get_filter(AVFilterGraph *graph, const char *nam
 /**
  * Create and add a filter instance into an existing graph.
  * The filter instance is created from the filter filt and inited
- * with the parameters args and opaque.
+ * with the parameter args. opaque is currently ignored.
  *
  * In case of success put in *filt_ctx the pointer to the created
  * filter instance, otherwise set *filt_ctx to NULL.