diff --git a/src/finiteVolume/functionObjects/fieldSelections/fieldSelection/fieldSelectionI.H b/src/finiteVolume/functionObjects/fieldSelections/fieldSelection/fieldSelectionI.H
index 3b656a1681..e195c1c8a7 100644
--- a/src/finiteVolume/functionObjects/fieldSelections/fieldSelection/fieldSelectionI.H
+++ b/src/finiteVolume/functionObjects/fieldSelections/fieldSelection/fieldSelectionI.H
@@ -48,7 +48,7 @@ inline Foam::wordHashSet
 Foam::functionObjects::fieldSelection::selectionNames() const
 {
     wordHashSet names;
-    for (const fieldInfo& fi : *this)
+    for (const fieldInfo& fi : selection_)
     {
         names.insert(fi.name());
     }