diff --git a/src/gui/qgsexpressiontreeview.cpp b/src/gui/qgsexpressiontreeview.cpp
index e3d93c1f1dd..6da5f32db35 100644
--- a/src/gui/qgsexpressiontreeview.cpp
+++ b/src/gui/qgsexpressiontreeview.cpp
@@ -650,7 +650,7 @@ void QgsExpressionTreeView::loadExpressionsFromJson( const QJsonDocument &expres
   settings.beginGroup( QStringLiteral( "user" ), QgsSettings::Section::Expressions );
   mUserExpressionLabels = settings.childGroups();
 
-  for ( const QJsonValue &expressionValue : expressionsObject["expressions"].toArray() )
+  for ( const QJsonValue &&expressionValue : expressionsObject["expressions"].toArray() )
   {
     // validate the type of the array element, can be anything
     if ( ! expressionValue.isObject() )