diff --git a/src/main.c b/src/main.c
index 9e7abc6..b446cc4 100644
--- a/src/main.c
+++ b/src/main.c
@@ -84,7 +84,6 @@ main(void)
 
         // Draw scene
         scene_draw();
-        sort_sub_ot();
         font_flush();
         swap_buffers();
     }
diff --git a/src/render.c b/src/render.c
index 3230773..d754030 100644
--- a/src/render.c
+++ b/src/render.c
@@ -97,6 +97,7 @@ swap_buffers()
     PutDrawEnv(&draw_buffer->draw_env);
     PutDispEnv(&disp_buffer->disp_env);
     /* DrawOTagEnv(&draw_buffer->ot[OT_LENGTH - 1], &draw_buffer->draw_env); */
+    sort_sub_ot();
     DrawOTag(&draw_buffer->ot[OT_LENGTH - 1]);
 
     SetDispMask(1);