diff --git a/tools/perf/util/hist.h b/tools/perf/util/hist.h
index c3a7750..4302f34 100644
--- a/tools/perf/util/hist.h
+++ b/tools/perf/util/hist.h
@@ -244,6 +244,7 @@
 	int need_collapse;
 	int parent;
 	int sym;
+	int dso;
 };
 
 extern struct perf_hpp_list perf_hpp_list;
diff --git a/tools/perf/util/sort.c b/tools/perf/util/sort.c
index 544ab37..2446c39 100644
--- a/tools/perf/util/sort.c
+++ b/tools/perf/util/sort.c
@@ -21,7 +21,6 @@
 const char	*field_order;
 regex_t		ignore_callees_regex;
 int		have_ignore_callees = 0;
-int		sort__has_dso = 0;
 int		sort__has_socket = 0;
 int		sort__has_thread = 0;
 int		sort__has_comm = 0;
@@ -241,7 +240,7 @@
 	 * comparing symbol address alone is not enough since it's a
 	 * relative address within a dso.
 	 */
-	if (!sort__has_dso) {
+	if (!hists__has(left->hists, dso) || hists__has(right->hists, dso)) {
 		ret = sort__dso_cmp(left, right);
 		if (ret != 0)
 			return ret;
@@ -2255,7 +2254,7 @@
 				sd->entry->se_collapse = sort__sym_sort;
 
 		} else if (sd->entry == &sort_dso) {
-			sort__has_dso = 1;
+			list->dso = 1;
 		} else if (sd->entry == &sort_socket) {
 			sort__has_socket = 1;
 		} else if (sd->entry == &sort_thread) {
@@ -2746,7 +2745,7 @@
 	perf_hpp_list.need_collapse = 0;
 	perf_hpp_list.parent = 0;
 	perf_hpp_list.sym = 0;
-	sort__has_dso = 0;
+	perf_hpp_list.dso = 0;
 
 	field_order = NULL;
 	sort_order = NULL;
diff --git a/tools/perf/util/sort.h b/tools/perf/util/sort.h
index 9a5e7d4..87d4addf 100644
--- a/tools/perf/util/sort.h
+++ b/tools/perf/util/sort.h
@@ -31,7 +31,6 @@
 extern const char default_sort_order[];
 extern regex_t ignore_callees_regex;
 extern int have_ignore_callees;
-extern int sort__has_dso;
 extern int sort__has_socket;
 extern int sort__has_thread;
 extern int sort__has_comm;