diff --git a/src/config.cc b/src/config.cc
index 2a97f0650..1585b1168 100644
--- a/src/config.cc
+++ b/src/config.cc
@@ -1157,7 +1157,7 @@ Class load()
 
   c.showingDictBarNames = ( root.namedItem( "showingDictBarNames" ).toElement().text() == "1" );
 
-  c.usingToolbarsIconSize =( root.namedItem( "usingToolbarsIconSize" ).toElement().text().toInt() ) ;
+  c.usingToolbarsIconSize =( static_cast<ToolbarsIconSize>(root.namedItem( "usingToolbarsIconSize" ).toElement().text().toInt()) ) ;
 
   if ( !root.namedItem( "historyExportPath" ).isNull() )
     c.historyExportPath = root.namedItem( "historyExportPath" ).toElement().text();
@@ -2152,7 +2152,7 @@ void save( Class const & c )
     root.appendChild( opt );
 
     opt = dd.createElement( "usingToolbarsIconSize" );
-    opt.appendChild( dd.createTextNode( QString::number(  c.usingToolbarsIconSize )  ) );
+    opt.appendChild( dd.createTextNode( QString::number( static_cast< int >( c.usingToolbarsIconSize ) ) ) );
     root.appendChild( opt );
 
     if ( !c.historyExportPath.isEmpty() ) {
diff --git a/src/config.hh b/src/config.hh
index 17488ad94..82a409c27 100644
--- a/src/config.hh
+++ b/src/config.hh
@@ -819,13 +819,13 @@ struct HeadwordsDialog
   {
   }
 };
+
 // TODO: arbitrary sizing
-// Not using enum here to bypass MSVC 2022 BUG.
-namespace ToolbarsIconSize {
-static const int small  = 0;
-static const int normal = 1;
-static const int large  = 2;
-} // namespace ToolbarsIconSize
+enum class ToolbarsIconSize : std::uint8_t {
+  small_size = 0, // _size because `small` causes error in MSVC 2022
+  normal     = 1,
+  large      = 2,
+};
 
 struct Class
 {
@@ -875,7 +875,7 @@ struct Class
 
   bool showingDictBarNames;
 
-  int usingToolbarsIconSize = ToolbarsIconSize::normal;
+  ToolbarsIconSize usingToolbarsIconSize = ToolbarsIconSize::normal;
 
   /// Maximum size for the headwords.
   /// Bigger headwords won't be indexed. For now, only in DSL.
diff --git a/src/ui/mainwindow.cc b/src/ui/mainwindow.cc
index 082f3d937..7330cfc27 100644
--- a/src/ui/mainwindow.cc
+++ b/src/ui/mainwindow.cc
@@ -508,7 +508,7 @@ MainWindow::MainWindow( Config::Class & cfg_ ):
   // Use small icons in toolbars
 
   useSmallIconsInToolbarsAction.setCheckable( true );
-  useSmallIconsInToolbarsAction.setChecked( cfg.usingToolbarsIconSize == Config::ToolbarsIconSize::small );
+  useSmallIconsInToolbarsAction.setChecked( cfg.usingToolbarsIconSize == Config::ToolbarsIconSize::small_size );
 
   connect( &useSmallIconsInToolbarsAction, &QAction::triggered, this, &MainWindow::useSmallIconsInToolbarsTriggered );
 
@@ -3029,7 +3029,7 @@ void MainWindow::useSmallIconsInToolbarsTriggered()
 {
   bool useSmallIcons = useSmallIconsInToolbarsAction.isChecked();
   if ( useSmallIcons ) {
-    cfg.usingToolbarsIconSize = Config::ToolbarsIconSize::small;
+    cfg.usingToolbarsIconSize = Config::ToolbarsIconSize::small_size;
     useLargeIconsInToolbarsAction.setChecked( false );
   }
   else if ( !useLargeIconsInToolbarsAction.isChecked() ) {
diff --git a/src/ui/scanpopup.cc b/src/ui/scanpopup.cc
index 8376e09c7..ec343e010 100644
--- a/src/ui/scanpopup.cc
+++ b/src/ui/scanpopup.cc
@@ -1110,7 +1110,7 @@ void ScanPopup::on_goForwardButton_clicked() const
 
 void ScanPopup::setDictionaryIconSize()
 {
-  if ( cfg.usingToolbarsIconSize == Config::ToolbarsIconSize::small ) {
+  if ( cfg.usingToolbarsIconSize == Config::ToolbarsIconSize::small_size ) {
     dictionaryBar.setDictionaryIconSize( DictionaryBar::IconSize::Small );
   }
   else if ( cfg.usingToolbarsIconSize == Config::ToolbarsIconSize::normal ) {