diff --git a/Source/OpenTK/Platform/Windows/WglHelper.cs b/Source/OpenTK/Platform/Windows/WglHelper.cs
index 9d266a4f..dd5f99d8 100644
--- a/Source/OpenTK/Platform/Windows/WglHelper.cs
+++ b/Source/OpenTK/Platform/Windows/WglHelper.cs
@@ -199,11 +199,11 @@ namespace OpenTK.Platform.Windows
             {
                 if (Wgl.Delegates.wglGetExtensionsStringARB != null)
                 {
-                    if (extensions == null || reload_ext_extension_strings)
+                    if (extensions == null || reload_arb_extension_strings)
                     {
                         extensions = Wgl.Arb.GetExtensionsString(deviceContext).Split(" ".ToCharArray(), StringSplitOptions.RemoveEmptyEntries);
                         Array.Sort(extensions);
-                        reload_ext_extension_strings = false;
+                        reload_arb_extension_strings = false;
                     }
 
                     return Array.BinarySearch(extensions, ext) != -1;
diff --git a/Source/OpenTK/Platform/Windows/WinGLNative.cs b/Source/OpenTK/Platform/Windows/WinGLNative.cs
index d9dd8d2d..84a1613d 100644
--- a/Source/OpenTK/Platform/Windows/WinGLNative.cs
+++ b/Source/OpenTK/Platform/Windows/WinGLNative.cs
@@ -31,7 +31,7 @@ namespace OpenTK.Platform.Windows
         private DisplayMode mode = new DisplayMode();
         //private WinRawInput driver;
 
-        private bool fullscreen;
+        //private bool fullscreen;
         private bool disposed;
         private bool isExiting;
         private bool exists;
@@ -195,8 +195,8 @@ namespace OpenTK.Platform.Windows
             }
             set
             {
-                fullscreen = false;
                 throw new NotImplementedException();
+                //fullscreen = false;
             }
         }