diff --git a/src/OpenFOAM/containers/Lists/PackedList/PackedList.H b/src/OpenFOAM/containers/Lists/PackedList/PackedList.H
index d768551f4b..951da80f0d 100644
--- a/src/OpenFOAM/containers/Lists/PackedList/PackedList.H
+++ b/src/OpenFOAM/containers/Lists/PackedList/PackedList.H
@@ -449,6 +449,7 @@ public:
                 //- Construct from base list and position index
                 inline iteratorBase(const PackedList*, const label);
 
+                //- Default copy constructor
                 iteratorBase(const iteratorBase&) = default;