diff --git a/Source/OpenTK/Platform/Windows/WinRawKeyboard.cs b/Source/OpenTK/Platform/Windows/WinRawKeyboard.cs
index a81b29b9..32faae1c 100644
--- a/Source/OpenTK/Platform/Windows/WinRawKeyboard.cs
+++ b/Source/OpenTK/Platform/Windows/WinRawKeyboard.cs
@@ -108,7 +108,7 @@ namespace OpenTK.Platform.Windows
                         string deviceClassGUID = (string)regkey.GetValue("ClassGUID"); // for windows 8 support via OpenTK issue 3198
 
                         // making a guess at backwards compatability. Not sure what older windows returns in these cases...
-                        if(deviceClass != null || deviceClass.Equals(string.Empty)){
+                        if(deviceClass == null || deviceClass.Equals(string.Empty)){
                             RegistryKey classGUIDKey = Registry.LocalMachine.OpenSubKey(@"SYSTEM\CurrentControlSet\Control\Class\" + deviceClassGUID);
                             deviceClass = classGUIDKey != null ? (string) classGUIDKey.GetValue("Class") : string.Empty;
                         }