diff --git a/apps/opencs/view/widget/completerpopup.cpp b/apps/opencs/view/widget/completerpopup.cpp
index 0a52295642..91b0902659 100644
--- a/apps/opencs/view/widget/completerpopup.cpp
+++ b/apps/opencs/view/widget/completerpopup.cpp
@@ -22,7 +22,12 @@ int CSVWidget::CompleterPopup::sizeHintForRow(int row) const
 
     ensurePolished();
     QModelIndex index = model()->index(row, modelColumn());
+#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+    QStyleOptionViewItem option;
+    initViewItemOption(&option);
+#else
     QStyleOptionViewItem option = viewOptions();
+#endif
     QAbstractItemDelegate* delegate = itemDelegate(index);
     return delegate->sizeHint(option, index).height();
 }