1 files changed, 4 insertions, 0 deletions
diff --git a/ext/ruby2d/ruby2d.c b/ext/ruby2d/ruby2d.c
index 1c4442a..625215a 100644
--- a/ext/ruby2d/ruby2d.c
+++ b/ext/ruby2d/ruby2d.c
@@ -26,6 +26,9 @@ struct sound_data {
   Sound snd;
 };
 
+static void close_window() {
+  S2D_Close(window);
+}
 
 static void free_image(struct image_data *data) {
   S2D_FreeImage(data->img);
@@ -212,6 +215,7 @@ static VALUE ruby2d_show(VALUE s) {
   
   S2D_Show(window);
   
+  atexit(close_window);
   return Qnil;
 }