diff --git a/core/resources/l10n/messages.properties b/core/resources/l10n/messages.properties
index f54a10cff..1debaa93b 100644
--- a/core/resources/l10n/messages.properties
+++ b/core/resources/l10n/messages.properties
@@ -410,7 +410,7 @@ PreferencesOptionPanel.checkbox.windowInfo.ttip = If unchecked, window informati
 UITheme.Auto = Auto (detect)
 UITheme.Light = Light (default)
 UITheme.Dark = Dark
-UITheme.DarkContrast = Dark, high contrast
+UITheme.DarkContrast = Dark, high-contrast
 
 ! Welcome dialog
 welcome.dlg.title = Welcome to OpenRocket