diff --git a/libavfilter/vf_fieldorder.c b/libavfilter/vf_fieldorder.c
index c44350f9c1..eb5e189041 100644
--- a/libavfilter/vf_fieldorder.c
+++ b/libavfilter/vf_fieldorder.c
@@ -84,8 +84,13 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *frame)
     AVFrame *out;
 
     if (!frame->interlaced_frame ||
-        frame->top_field_first == s->dst_tff)
+        frame->top_field_first == s->dst_tff) {
+        av_log(ctx, AV_LOG_VERBOSE,
+               "Skipping %s.\n",
+               frame->interlaced_frame ?
+               "frame with same field order" : "progressive frame");
         return ff_filter_frame(outlink, frame);
+    }
 
     if (av_frame_is_writable(frame)) {
         out = frame;