diff --git a/clang/include/clang/AST/ComparisonCategories.h b/clang/include/clang/AST/ComparisonCategories.h
--- a/clang/include/clang/AST/ComparisonCategories.h
+++ b/clang/include/clang/AST/ComparisonCategories.h
@@ -115,8 +115,7 @@
 public:
   /// The declaration for the comparison category type from the
   /// standard library.
-  // FIXME: Make this const
-  CXXRecordDecl *Record = nullptr;
+  const CXXRecordDecl *Record = nullptr;
 
   /// The Kind of the comparison category type
   ComparisonCategoryType Kind;