diff --git a/Subsurface/Items/Components/OxygenGenerator.cs b/Subsurface/Items/Components/OxygenGenerator.cs
index 1a43e3e52..f060f2be8 100644
--- a/Subsurface/Items/Components/OxygenGenerator.cs
+++ b/Subsurface/Items/Components/OxygenGenerator.cs
@@ -24,10 +24,8 @@ namespace Subsurface.Items.Components
 
             ventList = new List<Vent>();
 
-            item.linkedTo.CollectionChanged += new System.Collections.Specialized.NotifyCollectionChangedEventHandler(
-                delegate(object sender, System.Collections.Specialized.NotifyCollectionChangedEventArgs e)
-                { GetVents(); }
-            );
+            item.linkedTo.CollectionChanged += delegate(object sender, System.Collections.Specialized.NotifyCollectionChangedEventArgs e)
+            { GetVents(); };
         }
 
         public override void Update(float deltaTime, Camera cam)
diff --git a/Subsurface/Items/Components/Signal/LightComponent.cs b/Subsurface/Items/Components/Signal/LightComponent.cs
index 4c311b4b8..8563a9c8a 100644
--- a/Subsurface/Items/Components/Signal/LightComponent.cs
+++ b/Subsurface/Items/Components/Signal/LightComponent.cs
@@ -50,7 +50,7 @@ namespace Subsurface.Items.Components
                     isActive = !isActive;
                     break;
                 case "set_state":           
-                    isActive = (signal == "0") ? false : true;                   
+                    isActive = (signal != "0");                   
                     break;
             }
         }
diff --git a/Subsurface/Physics/PhysicsBody.cs b/Subsurface/Physics/PhysicsBody.cs
index 45de3635c..1955c4f63 100644
--- a/Subsurface/Physics/PhysicsBody.cs
+++ b/Subsurface/Physics/PhysicsBody.cs
@@ -190,7 +190,7 @@ namespace Subsurface
             else if (radius != 0.0f)
             {
                 body = BodyFactory.CreateCircle(Game1.world, radius, density);
-                bodyShape = Shape.Circle; ;
+                bodyShape = Shape.Circle;
             }
             else
             {
diff --git a/Subsurface/Screens/Screen.cs b/Subsurface/Screens/Screen.cs
index 11b393f5d..97132c386 100644
--- a/Subsurface/Screens/Screen.cs
+++ b/Subsurface/Screens/Screen.cs
@@ -1,5 +1,4 @@
-using Microsoft.Xna.Framework;
-using Microsoft.Xna.Framework.Graphics;
+using Microsoft.Xna.Framework.Graphics;
 
 namespace Subsurface
 {