diff --git a/src/gui/sdl_mapper.cpp b/src/gui/sdl_mapper.cpp
index 136e979a..360c36bf 100644
--- a/src/gui/sdl_mapper.cpp
+++ b/src/gui/sdl_mapper.cpp
@@ -2459,6 +2459,8 @@ void MAPPER_StartUp(Section * sec) {
 		sdlkey_map[0x41]=SDLK_KP6;
 #elif !defined (WIN32) /* => Linux & BSDs */
 		bool evdev_input = false;
+#ifdef SDL_VIDEO_DRIVER_X11
+//SDL needs to be compiled to use it, else the next makes no sense.
 #ifdef C_X11_XKB
 		SDL_SysWMinfo info;
 		SDL_VERSION(&info.version);
@@ -2477,6 +2479,7 @@ void MAPPER_StartUp(Section * sec) {
 			XkbFreeClientMap(desc,0,True);
 			}
 		}
+#endif
 #endif
 		if (evdev_input) {
 			sdlkey_map[0x67]=SDLK_UP;