diff --git a/src/photo.c b/src/photo.c
index 5eeee50..036e2b6 100644
--- a/src/photo.c
+++ b/src/photo.c
@@ -104,8 +104,8 @@ void cammy_photo_import(cammy_photo *dest, uint8_t *src, int stride) {
                 value = from ^ 0x03;
             }
 
-            tile->data[2*tile_y]   |=  (value & 0x01)       << (tile_x ^ 7);
-            tile->data[2*tile_y+1] |= ((value & 0x02) >> 1) << (tile_x ^ 7);
+            tile->data[ tile_y<<1]    |=  (value & 0x01)       << (tile_x ^ 7);
+            tile->data[(tile_y<<1)|1] |= ((value & 0x02) >> 1) << (tile_x ^ 7);
         }
     }
 }