diff --git a/src/structures/junction.cpp b/src/structures/junction.cpp
index 0b8beb42..343ed24f 100644
--- a/src/structures/junction.cpp
+++ b/src/structures/junction.cpp
@@ -31,8 +31,9 @@ bool operator<(Junction const & lhs, Junction const & rhs)
            ? lhs.get_mate1() < rhs.get_mate1()
            : lhs.get_mate2() != rhs.get_mate2()
              ? lhs.get_mate2() < rhs.get_mate2()
-             : lhs.get_inserted_sequence() < rhs.get_inserted_sequence();
-             // TODO (23.7.21, irallia): tandem_dup_count doesn't play a role here right?
+             : lhs.get_tandem_dup_count() != rhs.get_tandem_dup_count()
+               ? lhs.get_tandem_dup_count() < rhs.get_tandem_dup_count()
+               : lhs.get_inserted_sequence() < rhs.get_inserted_sequence();
 }
 
 bool operator==(Junction const & lhs, Junction const & rhs)