diff --git a/src/flb_input_chunk.c b/src/flb_input_chunk.c
index 9fc147a72e8..99ad920c82f 100644
--- a/src/flb_input_chunk.c
+++ b/src/flb_input_chunk.c
@@ -1808,8 +1808,8 @@ static int input_chunk_append_raw(struct flb_input_instance *in,
     real_size = flb_input_chunk_get_real_size(ic);
     real_diff = real_size - pre_real_size;
     if (real_diff != 0) {
-        flb_debug("[input chunk] update output instances with new chunk size diff=%zu",
-                  real_diff);
+        flb_debug("[input chunk] update output instances with new chunk size diff=%d, records=%zu, input=%s",
+                  real_diff, n_records, flb_input_name(in));
         flb_input_chunk_update_output_instances(ic, real_diff);
     }