diff --git a/src/test.c b/src/test.c
index b64dce2..a4a40bf 100644
--- a/src/test.c
+++ b/src/test.c
@@ -124,8 +124,8 @@ static void image_copy(cammy_sram_frame *frame, uint8_t *buf) {
                 value = from ^ 0x03;
             }
 
-            tile->data[2*tile_y]   |=  (value & 0x01)       << (7 - tile_x);
-            tile->data[2*tile_y+1] |= ((value & 0x02) >> 1) << (7 - tile_x);
+            tile->data[2*tile_y]   |=  (value & 0x01)       << (tile_x ^ 7);
+            tile->data[2*tile_y+1] |= ((value & 0x02) >> 1) << (tile_x ^ 7);
         }
     }
 }