diff --git a/Source/OpenTK/Configuration.cs b/Source/OpenTK/Configuration.cs
index fcae8212..0f3e99af 100644
--- a/Source/OpenTK/Configuration.cs
+++ b/Source/OpenTK/Configuration.cs
@@ -44,7 +44,6 @@ namespace OpenTK
     {
         static bool runningOnWindows, runningOnUnix, runningOnX11, runningOnMacOS, runningOnLinux;
         static bool runningOnMono;
-        static bool runningOnAndroid;
         volatile static bool initialized;
         readonly static object InitLock = new object();
 
diff --git a/Source/OpenTK/Platform/Dummy/DummyGLContext.cs b/Source/OpenTK/Platform/Dummy/DummyGLContext.cs
index bb6f1a2a..95059613 100644
--- a/Source/OpenTK/Platform/Dummy/DummyGLContext.cs
+++ b/Source/OpenTK/Platform/Dummy/DummyGLContext.cs
@@ -24,7 +24,6 @@ namespace OpenTK.Platform.Dummy
     {
         readonly GraphicsContext.GetAddressDelegate Loader;
 
-        bool vsync;
         int swap_interval;
         static int handle_count;
         Thread current_thread;
diff --git a/Source/OpenTK/Platform/Factory.cs b/Source/OpenTK/Platform/Factory.cs
index 571deb44..59e5d578 100644
--- a/Source/OpenTK/Platform/Factory.cs
+++ b/Source/OpenTK/Platform/Factory.cs
@@ -164,7 +164,6 @@ namespace OpenTK.Platform
         {
             #region Fields
 
-            bool disposed;
             static readonly string error_string = "Please, refer to http://www.opentk.com for more information.";
             
             #endregion
diff --git a/Source/OpenTK/Platform/MacOS/AglContext.cs b/Source/OpenTK/Platform/MacOS/AglContext.cs
index f8e0fe0c..c19c0c1c 100644
--- a/Source/OpenTK/Platform/MacOS/AglContext.cs
+++ b/Source/OpenTK/Platform/MacOS/AglContext.cs
@@ -49,7 +49,6 @@ namespace OpenTK.Platform.MacOS
 
         CarbonWindowInfo carbonWindow;
         IntPtr shareContextRef;
-        DisplayDevice device;
         bool mIsFullscreen = false;
 
         public AglContext(GraphicsMode mode, IWindowInfo window, IGraphicsContext shareContext)
diff --git a/Source/OpenTK/Platform/MacOS/CarbonGLNative.cs b/Source/OpenTK/Platform/MacOS/CarbonGLNative.cs
index b3307e16..12baf2c9 100644
--- a/Source/OpenTK/Platform/MacOS/CarbonGLNative.cs
+++ b/Source/OpenTK/Platform/MacOS/CarbonGLNative.cs
@@ -64,8 +64,6 @@ namespace OpenTK.Platform.MacOS
         bool mExists = true;
         DisplayDevice mDisplayDevice;
 
-        WindowAttributes mWindowAttrib;
-        WindowClass mWindowClass;
         WindowPositionMethod mPositionMethod = WindowPositionMethod.CenterOnMainScreen;
         int mTitlebarHeight;
         private WindowBorder windowBorder = WindowBorder.Resizable;
diff --git a/Source/OpenTK/Platform/Windows/WinRawInput.cs b/Source/OpenTK/Platform/Windows/WinRawInput.cs
index 80c5b0c2..9f12099f 100644
--- a/Source/OpenTK/Platform/Windows/WinRawInput.cs
+++ b/Source/OpenTK/Platform/Windows/WinRawInput.cs
@@ -144,7 +144,7 @@ namespace OpenTK.Platform.Windows
             {
                 gamepad_driver = new XInputJoystick();
             }
-            catch (Exception e)
+            catch (Exception)
             {
                 Debug.Print("[Win] XInput driver not supported, falling back to WinMM");
                 gamepad_driver = new MappedGamePadDriver();
diff --git a/Source/OpenTK/Platform/X11/X11Factory.cs b/Source/OpenTK/Platform/X11/X11Factory.cs
index 985f21cb..40cc402a 100644
--- a/Source/OpenTK/Platform/X11/X11Factory.cs
+++ b/Source/OpenTK/Platform/X11/X11Factory.cs
@@ -34,8 +34,6 @@ namespace OpenTK.Platform.X11
 {
     class X11Factory : PlatformFactoryBase
     {
-        bool disposed;
-
         #region Constructors
 
         public X11Factory()