1 files changed, 4 insertions, 0 deletions

diff --git a/framework/src/domain/maillistmodel.cpp b/framework/src/domain/maillistmodel.cpp
index b3f6f56b..97c37384 100644
--- a/framework/src/domain/maillistmodel.cpp
+++ b/framework/src/domain/maillistmodel.cpp
@@ -167,6 +167,10 @@ bool MailListModel::lessThan(const QModelIndex &left, const QModelIndex &right)
 {
     const auto leftDate = left.data(Sink::Store::DomainObjectRole).value<Sink::ApplicationDomain::Mail::Ptr>()->getDate();
     const auto rightDate = right.data(Sink::Store::DomainObjectRole).value<Sink::ApplicationDomain::Mail::Ptr>()->getDate();
+    if (leftDate == rightDate) {
+        return left.data(Sink::Store::DomainObjectRole).value<Sink::ApplicationDomain::Mail::Ptr>()->identifier() <
+                right.data(Sink::Store::DomainObjectRole).value<Sink::ApplicationDomain::Mail::Ptr>()->identifier();
+    }
     return leftDate < rightDate;
 }