diff --git a/killwindow.cpp b/killwindow.cpp
index 3ebbd6ce0f..11eaf6f5e0 100644
--- a/killwindow.cpp
+++ b/killwindow.cpp
@@ -107,15 +107,6 @@ bool KillWindow::isResponsibleForEvent(int eventType) const
     }
 }
 
-void KillWindow::processEvent(XEvent *event)
-{
-    if (event->type == XCB_BUTTON_RELEASE) {
-        handleButtonRelease(event->xbutton.button, event->xbutton.subwindow);
-    } else if (event->type == XCB_KEY_PRESS) {
-        handleKeyPress(event->xkey.keycode, event->xkey.state);
-    }
-}
-
 void KillWindow::processEvent(xcb_generic_event_t *event)
 {
     if (event->response_type == XCB_BUTTON_RELEASE) {
diff --git a/killwindow.h b/killwindow.h
index 2158af3c67..fc92467f98 100644
--- a/killwindow.h
+++ b/killwindow.h
@@ -25,8 +25,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #include <xcb/xcb.h>
 
-typedef union  _XEvent XEvent;
-
 namespace KWin
 {
 
@@ -42,8 +40,6 @@ public:
         return m_active;
     }
     bool isResponsibleForEvent(int eventType) const;
-    // TODO: remove once event handling is ported to XCB
-    void processEvent(XEvent *event);
     void processEvent(xcb_generic_event_t *event);
 
 private: