diff -r e3e5821999f1 src/render/software/SDL_render_sw.c
--- a/src/render/software/SDL_render_sw.c	Sat Feb 04 16:39:52 2012 -0500
+++ b/src/render/software/SDL_render_sw.c	Mon Feb 06 11:10:24 2012 -0500
@@ -183,6 +183,7 @@
 
     if (event->event == SDL_WINDOWEVENT_SIZE_CHANGED) {
         data->surface = NULL;
+        data->window = NULL;
     }
 }