diff --git a/tools/perf/util/sort.h b/tools/perf/util/sort.h
index 51f1b5a854e7..45ac84c1e037 100644
--- a/tools/perf/util/sort.h
+++ b/tools/perf/util/sort.h
@@ -117,10 +117,10 @@ static inline struct hist_entry *hist_entry__next_pair(struct hist_entry *he)
 	return NULL;
 }
 
-static inline void hist_entry__add_pair(struct hist_entry *he,
-					struct hist_entry *pair)
+static inline void hist_entry__add_pair(struct hist_entry *pair,
+					struct hist_entry *he)
 {
-	list_add_tail(&he->pairs.head, &pair->pairs.node);
+	list_add_tail(&pair->pairs.node, &he->pairs.head);
 }
 
 enum sort_mode {