diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c
index 10849a0..ad613ea 100644
--- a/tools/perf/util/hist.c
+++ b/tools/perf/util/hist.c
@@ -865,7 +865,7 @@
 	 * cumulated only one time to prevent entries more than 100%
 	 * overhead.
 	 */
-	he_cache = malloc(sizeof(*he_cache) * (iter->max_stack + 1));
+	he_cache = malloc(sizeof(*he_cache) * (callchain_cursor.nr + 1));
 	if (he_cache == NULL)
 		return -ENOMEM;
 
@@ -1030,8 +1030,6 @@
 	if (err)
 		return err;
 
-	iter->max_stack = max_stack_depth;
-
 	err = iter->ops->prepare_entry(iter, al);
 	if (err)
 		goto out;
diff --git a/tools/perf/util/hist.h b/tools/perf/util/hist.h
index a440a04..159d616 100644
--- a/tools/perf/util/hist.h
+++ b/tools/perf/util/hist.h
@@ -102,7 +102,6 @@
 	int curr;
 
 	bool hide_unresolved;
-	int max_stack;
 
 	struct perf_evsel *evsel;
 	struct perf_sample *sample;