diff --git a/pglab/CrudModel.cpp b/pglab/CrudModel.cpp
index 3e10332..6c67b87 100644
--- a/pglab/CrudModel.cpp
+++ b/pglab/CrudModel.cpp
@@ -366,7 +366,7 @@ bool CrudModel::savePendingChanges()
 		auto iter = m_pendingRowList.m_rows.begin();
 		auto [ok, modified_row] = updateRow(iter->second);
 		if (ok) {
-			m_modifiedRowList.emplace(iter->first, modified_row);
+			m_modifiedRowList.insert_or_assign(iter->first, modified_row);
 			m_pendingRowList.m_rows.erase(iter);
 		}
 	}