1 files changed, 2 insertions, 2 deletions
diff --git a/audio/filter/af_tools.c b/audio/filter/af_tools.c
index 0d5dc6c573..77fdad55f2 100644
--- a/audio/filter/af_tools.c
+++ b/audio/filter/af_tools.c
@@ -90,8 +90,8 @@ int af_test_output(struct af_instance* af, struct mp_audio* out)
   if((af->data->format != out->format) ||
      (af->data->bps    != out->bps)    ||
      (af->data->rate   != out->rate)   ||
-     (af->data->nch    != out->nch)){
-    memcpy(out,af->data,sizeof(struct mp_audio));
+     !mp_chmap_equals(&af->data->channels, &out->channels)){
+    *out = *af->data;
     return AF_FALSE;
   }
   return AF_OK;