diff --git a/OpenRA.Game/Widgets/DropDownButtonWidget.cs b/OpenRA.Game/Widgets/DropDownButtonWidget.cs
index 2cf3cff1a8..19509c7928 100644
--- a/OpenRA.Game/Widgets/DropDownButtonWidget.cs
+++ b/OpenRA.Game/Widgets/DropDownButtonWidget.cs
@@ -79,7 +79,7 @@ namespace OpenRA.Widgets
 			Widget.RootWidget.AddChild(panel);
 		}
 
-		public void ShowDropDown<T>(string panelTemplate, int height, List<T> options, Func<T, ScrollItemWidget, ScrollItemWidget> setupItem)
+		public void ShowDropDown<T>(string panelTemplate, int height, IEnumerable<T> options, Func<T, ScrollItemWidget, ScrollItemWidget> setupItem)
 		{
 			var substitutions = new Dictionary<string,int>() {{ "DROPDOWN_WIDTH", Bounds.Width }};
 			var panel = (ScrollPanelWidget)Widget.LoadWidget(panelTemplate, null, new WidgetArgs()
diff --git a/OpenRA.Mods.Cnc/Widgets/Logic/CncSettingsLogic.cs b/OpenRA.Mods.Cnc/Widgets/Logic/CncSettingsLogic.cs
index e998a5a6ea..c9b3e15124 100644
--- a/OpenRA.Mods.Cnc/Widgets/Logic/CncSettingsLogic.cs
+++ b/OpenRA.Mods.Cnc/Widgets/Logic/CncSettingsLogic.cs
@@ -179,7 +179,7 @@ namespace OpenRA.Mods.Cnc.Widgets.Logic
 				return item;
 			};
 
-			dropdown.ShowDropDown("LABEL_DROPDOWN_TEMPLATE", 500, options.Keys.ToList(), setupItem);
+			dropdown.ShowDropDown("LABEL_DROPDOWN_TEMPLATE", 500, options.Keys, setupItem);
 			return true;
 		}
 	}
diff --git a/OpenRA.Mods.RA/Widgets/Logic/DiplomacyLogic.cs b/OpenRA.Mods.RA/Widgets/Logic/DiplomacyLogic.cs
index 2f832e9f3d..04fed6c279 100644
--- a/OpenRA.Mods.RA/Widgets/Logic/DiplomacyLogic.cs
+++ b/OpenRA.Mods.RA/Widgets/Logic/DiplomacyLogic.cs
@@ -122,12 +122,12 @@ namespace OpenRA.Mods.RA.Widgets.Logic
 
 		void ShowDropDown(Player p, DropDownButtonWidget dropdown)
 		{
-			var stances = Enum.GetValues(typeof(Stance)).OfType<Stance>().ToList();
+			var stances = Enum.GetValues(typeof(Stance)).OfType<Stance>();
 			Func<Stance, ScrollItemWidget, ScrollItemWidget> setupItem = (s, template) =>
 			{
 				var item = ScrollItemWidget.Setup(template,
-												  () => s == world.LocalPlayer.Stances[ p ],
-												  () => SetStance(dropdown, p, s));
+					() => s == world.LocalPlayer.Stances[ p ],
+					() => SetStance(dropdown, p, s));
 
 				item.GetWidget<LabelWidget>("LABEL").GetText = () => s.ToString();
 				return item;
@@ -141,8 +141,8 @@ namespace OpenRA.Mods.RA.Widgets.Logic
 			if (p.World.LobbyInfo.GlobalSettings.LockTeams)
 				return;	// team changes are banned
 
-			world.IssueOrder(new Order("SetStance", world.LocalPlayer.PlayerActor,
-				false) { TargetLocation = new int2((int)ss, 0), TargetString = p.InternalName });
+			world.IssueOrder(new Order("SetStance", world.LocalPlayer.PlayerActor, false)
+				{ TargetLocation = new int2((int)ss, 0), TargetString = p.InternalName });
 
 			bw.Text = ss.ToString();
 		}
diff --git a/OpenRA.Mods.RA/Widgets/Logic/LobbyUtils.cs b/OpenRA.Mods.RA/Widgets/Logic/LobbyUtils.cs
index 2a2f184e89..ef896dd31f 100644
--- a/OpenRA.Mods.RA/Widgets/Logic/LobbyUtils.cs
+++ b/OpenRA.Mods.RA/Widgets/Logic/LobbyUtils.cs
@@ -117,7 +117,7 @@ namespace OpenRA.Mods.RA.Widgets.Logic
 				return item;
 			};
 
-			dropdown.ShowDropDown("RACE_DROPDOWN_TEMPLATE", 150, countryNames.Keys.ToList(), setupItem);
+			dropdown.ShowDropDown("RACE_DROPDOWN_TEMPLATE", 150, countryNames.Keys, setupItem);
 		}
 
 		public static Dictionary<int2, Color> GetSpawnColors(OrderManager orderManager, Map map)
diff --git a/OpenRA.Mods.RA/Widgets/Logic/MainMenuButtonsLogic.cs b/OpenRA.Mods.RA/Widgets/Logic/MainMenuButtonsLogic.cs
index 2480831dec..7c031c94e7 100644
--- a/OpenRA.Mods.RA/Widgets/Logic/MainMenuButtonsLogic.cs
+++ b/OpenRA.Mods.RA/Widgets/Logic/MainMenuButtonsLogic.cs
@@ -59,7 +59,7 @@ namespace OpenRA.Mods.RA.Widgets.Logic
 				return item;
 			};
 
-			dropdown.ShowDropDown("LABEL_DROPDOWN_TEMPLATE", 150, Mod.AllMods.Keys.ToList(), setupItem);
+			dropdown.ShowDropDown("LABEL_DROPDOWN_TEMPLATE", 150, Mod.AllMods.Keys, setupItem);
 		}
 	}
 }
diff --git a/OpenRA.Mods.RA/Widgets/Logic/SettingsMenuLogic.cs b/OpenRA.Mods.RA/Widgets/Logic/SettingsMenuLogic.cs
index 802058e534..04d9e2264f 100644
--- a/OpenRA.Mods.RA/Widgets/Logic/SettingsMenuLogic.cs
+++ b/OpenRA.Mods.RA/Widgets/Logic/SettingsMenuLogic.cs
@@ -156,7 +156,7 @@ namespace OpenRA.Mods.RA.Widgets.Logic
 				return item;
 			};
 
-			dropdown.ShowDropDown("LABEL_DROPDOWN_TEMPLATE", 500, options.Keys.ToList(), setupItem);
+			dropdown.ShowDropDown("LABEL_DROPDOWN_TEMPLATE", 500, options.Keys, setupItem);
 			return true;
 		}
 	}