diff --git a/src/CalcViewModel/Common/CopyPasteManager.cpp b/src/CalcViewModel/Common/CopyPasteManager.cpp
index b5a4adfa..5f774b33 100644
--- a/src/CalcViewModel/Common/CopyPasteManager.cpp
+++ b/src/CalcViewModel/Common/CopyPasteManager.cpp
@@ -23,18 +23,18 @@ static constexpr wstring_view c_validCharacterSet{ L"0123456789()+-*/.abcdefABCD
 // as both wstring_view and wchar[] can not be concatenated
 // [\s\x85] means white-space characters
 static const wstring c_wspc = L"[\\s\\x85]*";
-static const auto c_wspcLParens = c_wspc + L"[(]*" + c_wspc;
-static const auto c_wspcLParenSigned = c_wspc + L"([-+]?[(])*" + c_wspc;
-static const auto c_wspcRParens = c_wspc + L"[)]*" + c_wspc;
-static const auto c_signedDecFloat = L"[-+]?\\d*(\\d|[.])\\d*";
+static const wstring c_wspcLParens = c_wspc + L"[(]*" + c_wspc;
+static const wstring c_wspcLParenSigned = c_wspc + L"([-+]?[(])*" + c_wspc;
+static const wstring c_wspcRParens = c_wspc + L"[)]*" + c_wspc;
+static const wstring c_signedDecFloat = L"[-+]?\\d*(\\d|[.])\\d*";
 
 // Programmer Mode Integer patterns
 // Support digit separators ` (WinDbg/MASM), ' (C++), and _ (C# and other languages)
-static constexpr auto c_hexProgrammerChars = L"([a-f]|[A-F]|\\d)+((_|'|`)([a-f]|[A-F]|\\d)+)*";
-static constexpr auto c_decProgrammerChars = L"\\d+((_|'|`)\\d+)*";
-static constexpr auto c_octProgrammerChars = L"[0-7]+((_|'|`)[0-7]+)*";
-static constexpr auto c_binProgrammerChars = L"[0-1]+((_|'|`)[0-1]+)*";
-static constexpr auto c_uIntSuffixes = L"[uU]?[lL]{0,2}";
+static const wstring c_hexProgrammerChars = L"([a-f]|[A-F]|\\d)+((_|'|`)([a-f]|[A-F]|\\d)+)*";
+static const wstring c_decProgrammerChars = L"\\d+((_|'|`)\\d+)*";
+static const wstring c_octProgrammerChars = L"[0-7]+((_|'|`)[0-7]+)*";
+static const wstring c_binProgrammerChars = L"[0-1]+((_|'|`)[0-1]+)*";
+static const wstring c_uIntSuffixes = L"[uU]?[lL]{0,2}";
 
 // RegEx Patterns used by various modes
 static const array<wregex, 1> standardModePatterns = { wregex(c_wspc + c_signedDecFloat + c_wspc) };
@@ -274,7 +274,7 @@ bool CopyPasteManager::ExpressionRegExMatch(vector<wstring> operands, ViewMode m
     {
         // Each operand only needs to match one of the available patterns.
         bool operandMatched = false;
-        for (const auto& pattern : patterns)
+        for (const wregex& pattern : patterns)
         {
             operandMatched = operandMatched || regex_match(operand, pattern);
         }
@@ -283,7 +283,7 @@ bool CopyPasteManager::ExpressionRegExMatch(vector<wstring> operands, ViewMode m
         {
             // Remove characters that are valid in the expression but we do not want to include in length calculations
             // or which will break conversion from string-to-ULL.
-            const wstring operandValue = SanitizeOperand(operand);
+            wstring operandValue = SanitizeOperand(operand);
 
             // If an operand exceeds the maximum length allowed, break and return.
             if (OperandLength(operandValue, mode, modeType, programmerNumberBase) > maxOperandLength)