diff --git a/lib/irrlicht/source/Irrlicht/CIrrDeviceLinux.cpp b/lib/irrlicht/source/Irrlicht/CIrrDeviceLinux.cpp
index 6cef27149..d848b4b37 100644
--- a/lib/irrlicht/source/Irrlicht/CIrrDeviceLinux.cpp
+++ b/lib/irrlicht/source/Irrlicht/CIrrDeviceLinux.cpp
@@ -674,10 +674,12 @@ void CIrrDeviceLinux::grabPointer(bool grab)
 #endif
 }
 
+#ifdef _IRR_COMPILE_WITH_X11_
 Bool CIrrDeviceLinux::isWindowMapped(Display* display, XEvent* event, XPointer arg)
 {
     return event->type == MapNotify && event->xmap.window == *((Window*)arg);
 }
+#endif
 
 bool CIrrDeviceLinux::createWindow()
 {