diff --git a/clang/lib/AST/Interp/Descriptor.h b/clang/lib/AST/Interp/Descriptor.h
index 2fd4e92082645..6ee9bbe85d71d 100644
--- a/clang/lib/AST/Interp/Descriptor.h
+++ b/clang/lib/AST/Interp/Descriptor.h
@@ -84,7 +84,7 @@ struct Descriptor final {
   const unsigned ElemSize;
   /// Size of the storage, in host bytes.
   const unsigned Size;
-  // Size of the metadata.
+  /// Size of the metadata.
   const unsigned MDSize;
   /// Size of the allocation (storage + metadata), in host bytes.
   const unsigned AllocSize;