diff --git a/gcc/d/typeinfo.cc b/gcc/d/typeinfo.cc
index 04e228abf7cc961a2c996547f6e0124755a7a019..fd8c746a307d51a40711739ecd85e4f336a4e8c1 100644
--- a/gcc/d/typeinfo.cc
+++ b/gcc/d/typeinfo.cc
@@ -411,8 +411,7 @@ class TypeInfoVisitor : public Visitor
     this->layout_field (value);
   }
 
-
-  /* Write out the __vptr and __monitor fields of class CD.  */
+  /* Write out the __vptr and optionally __monitor fields of class CD.  */
 
   void layout_base (ClassDeclaration *cd)
   {