Index: binaries/data/mods/public/gui/gamesettings/attributes/Daytime.js
===================================================================
--- binaries/data/mods/public/gui/gamesettings/attributes/Daytime.js
+++ binaries/data/mods/public/gui/gamesettings/attributes/Daytime.js
@@ -23,11 +23,11 @@
 
 	onMapChange()
 	{
-		let mapData = this.settings.map.data;
+		const mapData = this.settings.map.data;
 		if (!mapData || !mapData.settings || !mapData.settings.Daytime)
 		{
-			this.value = undefined;
 			this.data = undefined;
+			this.value = undefined;
 			return;
 		}
 		// TODO: validation