diff --git a/PowerAccent.Core/Tools/KeyboardListener.cs b/PowerAccent.Core/Tools/KeyboardListener.cs
index 16c018f..3ab74db 100644
--- a/PowerAccent.Core/Tools/KeyboardListener.cs
+++ b/PowerAccent.Core/Tools/KeyboardListener.cs
@@ -75,14 +75,11 @@ private IntPtr LowLevelKeyboardProc(int nCode, UIntPtr wParam, IntPtr lParam)
     {
         if (nCode >= 0)
             if (wParam.ToUInt32() == (int)InterceptKeys.KeyEvent.WM_KEYDOWN ||
-                wParam.ToUInt32() == (int)InterceptKeys.KeyEvent.WM_KEYUP ||
-                wParam.ToUInt32() == (int)InterceptKeys.KeyEvent.WM_SYSKEYDOWN ||
-                wParam.ToUInt32() == (int)InterceptKeys.KeyEvent.WM_SYSKEYUP)
+                wParam.ToUInt32() == (int)InterceptKeys.KeyEvent.WM_KEYUP)
             {
                 //Captures the character(s) pressed only on WM_KEYDOWN
                 var chars = InterceptKeys.VKCodeToString((uint)Marshal.ReadInt32(lParam),
-                    wParam.ToUInt32() == (int)InterceptKeys.KeyEvent.WM_KEYDOWN ||
-                     wParam.ToUInt32() == (int)InterceptKeys.KeyEvent.WM_SYSKEYDOWN);
+                    wParam.ToUInt32() == (int)InterceptKeys.KeyEvent.WM_KEYDOWN);
 
                 if (!hookedKeyboardCallbackAsync.Invoke((InterceptKeys.KeyEvent)wParam.ToUInt32(), Marshal.ReadInt32(lParam), chars))
                 {
@@ -108,20 +105,12 @@ bool KeyboardListener_KeyboardCallbackAsync(InterceptKeys.KeyEvent keyEvent, int
                 if (KeyDown != null)
                     return KeyDown.Invoke(this, new RawKeyEventArgs(vkCode, false, character));
                 break;
-            case InterceptKeys.KeyEvent.WM_SYSKEYDOWN:
-                if (KeyDown != null)
-                    return KeyDown.Invoke(this, new RawKeyEventArgs(vkCode, true, character));
-                break;
 
             // KeyUp events
             case InterceptKeys.KeyEvent.WM_KEYUP:
                 if (KeyUp != null)
                     return KeyUp.Invoke(this, new RawKeyEventArgs(vkCode, false, character));
                 break;
-            case InterceptKeys.KeyEvent.WM_SYSKEYUP:
-                if (KeyUp != null)
-                    return KeyUp.Invoke(this, new RawKeyEventArgs(vkCode, true, character));
-                break;
 
             default:
                 break;