Index: ps/trunk/binaries/data/mods/public/gui/gamesetup/Pages/GameSetupPage/GameSettings/Single/Checkboxes/WorldPopulation.js
===================================================================
--- ps/trunk/binaries/data/mods/public/gui/gamesetup/Pages/GameSetupPage/GameSettings/Single/Checkboxes/WorldPopulation.js
+++ ps/trunk/binaries/data/mods/public/gui/gamesetup/Pages/GameSetupPage/GameSettings/Single/Checkboxes/WorldPopulation.js
@@ -12,6 +12,8 @@
 			g_GameAttributes.settings.WorldPopulation = mapValue;
 			this.gameSettingsControl.updateGameAttributes();
 		}
+
+		this.setEnabled(g_GameAttributes.mapType != "scenario");
 	}
 
 	onGameAttributesChange()