diff --git a/.clang-tidy b/.clang-tidy
index 7d281d5a..9856533f 100644
--- a/.clang-tidy
+++ b/.clang-tidy
@@ -1,4 +1,4 @@
-Checks: '-*,clang-diagnostic-*,llvm-*,misc-*,-misc-use-anonymous-namespace,-misc-include-cleaner,-misc-non-private-member-variables-in-classes,readability-identifier-naming'
+Checks: '-*,clang-diagnostic-*,llvm-*,misc-*,-misc-use-anonymous-namespace,-misc-include-cleaner,-misc-non-private-member-variables-in-classes,readability-identifier-naming,-misc-const-correctness'
 WarningsAsErrors: '*'
 CheckOptions:
   - key:             readability-identifier-naming.ClassCase
diff --git a/lib/API/DX/DXFeatures.cpp b/lib/API/DX/DXFeatures.cpp
index de0ab2c3..c2c4d1aa 100644
--- a/lib/API/DX/DXFeatures.cpp
+++ b/lib/API/DX/DXFeatures.cpp
@@ -34,15 +34,14 @@ static ArrayRef<EnumEntry<RootSignature>> getRootSignatures() {
   return ArrayRef(RootSignatureNames);
 }
 
-namespace {
 template <typename T>
-std::string enumEntryToString(ArrayRef<EnumEntry<T>> EnumValues, T Value) {
+static std::string enumEntryToString(ArrayRef<EnumEntry<T>> EnumValues,
+                                     T Value) {
   for (const EnumEntry<T> &I : EnumValues)
     if (I.Value == Value)
       return I.Name.str();
   llvm_unreachable("All cases must be covered");
 }
-} // namespace
 
 std::string CapabilityPrinter<directx::ShaderModel>::toString(
     const directx::ShaderModel &V) {