diff --git a/libavfilter/af_anlmdn.c b/libavfilter/af_anlmdn.c
index af6a6a69e9..141e5f398e 100644
--- a/libavfilter/af_anlmdn.c
+++ b/libavfilter/af_anlmdn.c
@@ -93,23 +93,6 @@ static const AVOption anlmdn_options[] = {
 
 AVFILTER_DEFINE_CLASS(anlmdn);
 
-static int query_formats(AVFilterContext *ctx)
-{
-    static const enum AVSampleFormat sample_fmts[] = {
-        AV_SAMPLE_FMT_FLTP,
-        AV_SAMPLE_FMT_NONE
-    };
-    int ret = ff_set_common_formats_from_list(ctx, sample_fmts);
-    if (ret < 0)
-        return ret;
-
-    ret = ff_set_common_all_channel_counts(ctx);
-    if (ret < 0)
-        return ret;
-
-    return ff_set_common_all_samplerates(ctx);
-}
-
 static float compute_distance_ssd_c(const float *f1, const float *f2, ptrdiff_t K)
 {
     float distance = 0.;
@@ -407,7 +390,7 @@ const AVFilter ff_af_anlmdn = {
     .uninit        = uninit,
     FILTER_INPUTS(inputs),
     FILTER_OUTPUTS(outputs),
-    FILTER_QUERY_FUNC(query_formats),
+    FILTER_SINGLE_SAMPLEFMT(AV_SAMPLE_FMT_FLTP),
     .process_command = process_command,
     .flags         = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL |
                      AVFILTER_FLAG_SLICE_THREADS,