diff --git a/src/Render.s b/src/Render.s
index a7ecc17..fe08594 100644
--- a/src/Render.s
+++ b/src/Render.s
@@ -265,6 +265,7 @@ dirty_sprite
 
 ; This is the code path to handle tile with multiple, overlapping sprites.
 multi_sprite
+                 plb
                  rts                                  ; TBD
 
 DirtyTileProcs       dw  _TBDirtyTile_00,_TBDirtyTile_0H,_TBDirtyTile_V0,_TBDirtyTile_VH