diff --git a/src/CalcManager/CalculatorHistory.h b/src/CalcManager/CalculatorHistory.h
index 583a004c..34b21c9d 100644
--- a/src/CalcManager/CalculatorHistory.h
+++ b/src/CalcManager/CalculatorHistory.h
@@ -34,7 +34,7 @@ namespace CalculationManager
         CalculatorHistory(const size_t maxSize);
         unsigned int AddToHistory(_In_ std::shared_ptr<CalculatorVector <std::pair<std::wstring, int>>> const &spTokens, _In_ std::shared_ptr<CalculatorVector<std::shared_ptr<IExpressionCommand>>> const &spCommands, _In_ std::wstring_view result);
         std::vector<std::shared_ptr<HISTORYITEM>> const& GetHistory();
-        std::shared_ptr<HISTORYITEM> const& GetHistoryItem(_In_ unsigned int uIdx);
+        std::shared_ptr<HISTORYITEM> const& GetHistoryItem(unsigned int uIdx);
         void ClearHistory();
         unsigned int AddItem(_In_ std::shared_ptr<HISTORYITEM> const &spHistoryItem);
         bool RemoveItem(_In_ unsigned int uIdx);