--- Makefile.old	2011-06-22 06:30:52.441788160 +0200
+++ Makefile	2011-06-22 06:31:59.754087534 +0200
@@ -138,7 +138,7 @@
 endif
 
 ALL_LIBS := $(SDL_LIBS) $(BASE_LIBS) $(TILT_LIBS) $(INTL_LIBS) -lSDL_ttf \
-    -lvorbisfile $(OGL_LIBS)
+    -lvorbisfile $(OGL_LIBS) -lX11
 
 #------------------------------------------------------------------------------