diff --git a/apps/calculation/history_controller.h b/apps/calculation/history_controller.h
index db9c1b803..ae314d001 100644
--- a/apps/calculation/history_controller.h
+++ b/apps/calculation/history_controller.h
@@ -32,7 +32,7 @@ public:
 
 private:
   constexpr static int k_maxNumberOfDisplayedRows = 10;
-  constexpr static int k_resultHeight = 12;
+  constexpr static KDCoordinate k_resultHeight = 12;
   HistoryViewCell m_calculationHistory[k_maxNumberOfDisplayedRows];
   SelectableTableView m_selectableTableView;
   CalculationStore * m_calculationStore;
diff --git a/apps/calculation/history_view_cell.h b/apps/calculation/history_view_cell.h
index 1c7f72725..ff9e8267a 100644
--- a/apps/calculation/history_view_cell.h
+++ b/apps/calculation/history_view_cell.h
@@ -20,7 +20,7 @@ public:
   void didBecomeFirstResponder() override;
   bool handleEvent(Ion::Events::Event event) override;
 private:
-  constexpr static int k_resultWidth = 80;
+  constexpr static KDCoordinate k_resultWidth = 80;
   enum class SelectedView {
     PrettyPrint,
     Result