diff --git a/libavfilter/aeval.c b/libavfilter/aeval.c
index 9800a60d50..1f74f49c72 100644
--- a/libavfilter/aeval.c
+++ b/libavfilter/aeval.c
@@ -427,7 +427,6 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *in)
     double t0;
     int i, j;
 
-    /* do volume scaling in-place if input buffer is writable */
     out = ff_get_audio_buffer(outlink, nb_samples);
     if (!out) {
         av_frame_free(&in);