diff --git a/libavfilter/af_crystalizer.c b/libavfilter/af_crystalizer.c
index 3e840d0439..449f24a082 100644
--- a/libavfilter/af_crystalizer.c
+++ b/libavfilter/af_crystalizer.c
@@ -224,18 +224,6 @@ static av_cold void uninit(AVFilterContext *ctx)
     av_frame_free(&s->prev);
 }
 
-static int process_command(AVFilterContext *ctx, const char *cmd, const char *args,
-                           char *res, int res_len, int flags)
-{
-    int ret;
-
-    ret = ff_filter_process_command(ctx, cmd, args, res, res_len, flags);
-    if (ret < 0)
-        return ret;
-
-    return config_input(ctx->inputs[0]);
-}
-
 static const AVFilterPad inputs[] = {
     {
         .name         = "default",
@@ -262,7 +250,7 @@ const AVFilter ff_af_crystalizer = {
     FILTER_OUTPUTS(outputs),
     FILTER_SAMPLEFMTS(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_FLTP,
                       AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_DBLP),
-    .process_command = process_command,
+    .process_command = ff_filter_process_command,
     .flags          = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL |
                       AVFILTER_FLAG_SLICE_THREADS,
 };