diff --git a/tools/perf/builtin-diff.c b/tools/perf/builtin-diff.c
index 0e46fa1..c9cc771 100644
--- a/tools/perf/builtin-diff.c
+++ b/tools/perf/builtin-diff.c
@@ -587,6 +587,9 @@
 
 		insert_hist_entry_by_compute(&hists->entries, he, compute);
 		hists__inc_stats(hists, he);
+
+		if (!he->filtered)
+			hists__calc_col_len(hists, he);
 	}
 }
 
diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c
index 12d6c1b..f5b388e 100644
--- a/tools/perf/util/hist.c
+++ b/tools/perf/util/hist.c
@@ -320,7 +320,6 @@
 void hists__inc_stats(struct hists *hists, struct hist_entry *h)
 {
 	if (!h->filtered) {
-		hists__calc_col_len(hists, h);
 		hists->nr_non_filtered_entries++;
 		hists->stats.total_non_filtered_period += h->stat.period;
 	}
@@ -687,6 +686,9 @@
 
 		__hists__insert_output_entry(&hists->entries, n, min_callchain_hits);
 		hists__inc_stats(hists, n);
+
+		if (!n->filtered)
+			hists__calc_col_len(hists, n);
 	}
 }