diff --git a/OpenRA.Editor/Form1.cs b/OpenRA.Editor/Form1.cs
index 6364e5dd2b..c9834e1c8d 100644
--- a/OpenRA.Editor/Form1.cs
+++ b/OpenRA.Editor/Form1.cs
@@ -86,14 +86,17 @@ namespace OpenRA.Editor
 
 				// TODO: make this work properly
 				foreach (var init in Program.Rules.Actors[kv.Value.Type].GetInitKeys())
-					apd.AddRow(init.First,
+				{
+					var initName = init.First;
+					apd.AddRow(initName,
 						apd.MakeEditorControl(init.Second,
 							() =>
 							{
 								var nodesDict = objSaved.ToDictionary();
-								return nodesDict.ContainsKey(init.First) ? nodesDict[init.First].Value : null;
+								return nodesDict.ContainsKey(initName) ? nodesDict[initName].Value : null;
 							},
 							_ => { }));
+				}
 
 				apd.ShowDialog();
 
diff --git a/OpenRA.Game/FileSystem/GlobalFileSystem.cs b/OpenRA.Game/FileSystem/GlobalFileSystem.cs
index 8e45075217..ec7ced255a 100644
--- a/OpenRA.Game/FileSystem/GlobalFileSystem.cs
+++ b/OpenRA.Game/FileSystem/GlobalFileSystem.cs
@@ -199,13 +199,14 @@ namespace OpenRA.FileSystem
 
 			foreach (var ext in exts)
 			{
+				var possibleName = filename + ext;
 				var folder = MountedFolders
-					.Where(x => x.Exists(filename + ext))
+					.Where(x => x.Exists(possibleName))
 					.MaxByOrDefault(x => x.Priority);
 
 				if (folder != null)
 				{
-					s = folder.GetContent(filename + ext);
+					s = folder.GetContent(possibleName);
 					return true;
 				}
 			}
diff --git a/OpenRA.Mods.RA/Crates/LevelUpCrateAction.cs b/OpenRA.Mods.RA/Crates/LevelUpCrateAction.cs
index 50d03a2e74..5212e408d2 100644
--- a/OpenRA.Mods.RA/Crates/LevelUpCrateAction.cs
+++ b/OpenRA.Mods.RA/Crates/LevelUpCrateAction.cs
@@ -68,9 +68,10 @@ namespace OpenRA.Mods.RA
 
 			foreach (var actor in inRange.Append(collector))
 			{
-				actor.World.AddFrameEndTask(w =>
+				var recipient = actor;	// loop variable in closure hazard
+				recipient.World.AddFrameEndTask(w =>
 				{
-					var gainsExperience = actor.TraitOrDefault<GainsExperience>();
+					var gainsExperience = recipient.TraitOrDefault<GainsExperience>();
 					if (gainsExperience != null)
 						gainsExperience.GiveLevels(((LevelUpCrateActionInfo)info).Levels);
 				});
diff --git a/OpenRA.Mods.RA/PrimaryBuilding.cs b/OpenRA.Mods.RA/PrimaryBuilding.cs
index 6cf53664a3..226f1ff6fe 100755
--- a/OpenRA.Mods.RA/PrimaryBuilding.cs
+++ b/OpenRA.Mods.RA/PrimaryBuilding.cs
@@ -67,13 +67,16 @@ namespace OpenRA.Mods.RA
 			// TODO: THIS IS SHIT
 			// Cancel existing primaries
 			foreach (var p in self.Info.Traits.Get<ProductionInfo>().Produces)
+			{
+				var productionType = p;		// benign closure hazard
 				foreach (var b in self.World
 					.ActorsWithTrait<PrimaryBuilding>()
 					.Where(a =>
 						a.Actor.Owner == self.Owner &&
 						a.Trait.IsPrimary &&
-						a.Actor.Info.Traits.Get<ProductionInfo>().Produces.Contains(p)))
+						a.Actor.Info.Traits.Get<ProductionInfo>().Produces.Contains(productionType)))
 					b.Trait.SetPrimaryProducer(b.Actor, false);
+			}
 
 			isPrimary = true;
 
diff --git a/OpenRA.Mods.RA/Render/WithMuzzleFlash.cs b/OpenRA.Mods.RA/Render/WithMuzzleFlash.cs
index 0621331604..c5d7e4e028 100644
--- a/OpenRA.Mods.RA/Render/WithMuzzleFlash.cs
+++ b/OpenRA.Mods.RA/Render/WithMuzzleFlash.cs
@@ -38,6 +38,8 @@ namespace OpenRA.Mods.RA.Render
 
 			foreach (var arm in self.TraitsImplementing<Armament>())
 			{
+				var armClosure = arm;	// closure hazard in AnimationWithOffset
+
 				// Skip armaments that don't define muzzles
 				if (arm.Info.MuzzleSequence == null)
 					continue;
@@ -55,7 +57,7 @@ namespace OpenRA.Mods.RA.Render
 					visible.Add(barrel, false);
 					anims.Add(barrel,
 						new AnimationWithOffset(muzzleFlash,
-							() => info.IgnoreOffset ? WVec.Zero : arm.MuzzleOffset(self, barrel),
+							() => info.IgnoreOffset ? WVec.Zero : armClosure.MuzzleOffset(self, barrel),
 							() => !visible[barrel],
 							() => false,
 							p => WithTurret.ZOffsetFromCenter(self, p, 2)));
diff --git a/OpenRA.Mods.RA/World/DomainIndex.cs b/OpenRA.Mods.RA/World/DomainIndex.cs
index 9b6704cca2..4e27de07c6 100644
--- a/OpenRA.Mods.RA/World/DomainIndex.cs
+++ b/OpenRA.Mods.RA/World/DomainIndex.cs
@@ -89,7 +89,8 @@ namespace OpenRA.Mods.RA
 			foreach (var cell in dirtyCells)
 			{
 				// Select all neighbors inside the map boundries
-				var neighbors = CVec.directions.Select(d => d + cell)
+				var thisCell = cell;	// benign closure hazard
+				var neighbors = CVec.directions.Select(d => d + thisCell)
 					.Where(c => map.Contains(c));
 
 				var found = false;