diff --git a/Source/OpenTK/Platform/Windows/API.cs b/Source/OpenTK/Platform/Windows/API.cs
index d55282d0..9a89dbd0 100644
--- a/Source/OpenTK/Platform/Windows/API.cs
+++ b/Source/OpenTK/Platform/Windows/API.cs
@@ -470,11 +470,8 @@ namespace OpenTK.Platform.Windows
 
         #region SwapBuffers
 
-        /// <summary>
-        /// 
-        /// </summary>
-        /// <param name="dc"></param>
-        [DllImport("gdi32.dll")]
+        [SuppressUnmanagedCodeSecurity]
+        [DllImport("gdi32.dll", SetLastError=true)]
         [return: MarshalAs(UnmanagedType.Bool)]
         internal static extern bool SwapBuffers(IntPtr dc);
 
@@ -1433,8 +1430,8 @@ namespace OpenTK.Platform.Windows
     #endregion
 
     #region PixelFormatDescriptor
-
-    #pragma warning disable 0169    
+
+    #pragma warning disable 0169    
     
     /// <summary>
     /// Describes a pixel format. It is used when interfacing with the WINAPI to create a new Context.
@@ -1469,8 +1466,8 @@ namespace OpenTK.Platform.Windows
         internal int LayerMask;
         internal int VisibleMask;
         internal int DamageMask;
-    }
-    
+    }
+    
     #pragma warning restore 0169
 
     #endregion