diff --git a/packages/topdown/src/persea/room-sides/tiles-side/index.jsx b/packages/topdown/src/persea/room-sides/tiles-side/index.jsx
index 5983f47..7c29c11 100644
--- a/packages/topdown/src/persea/room-sides/tiles-side/index.jsx
+++ b/packages/topdown/src/persea/room-sides/tiles-side/index.jsx
@@ -122,7 +122,7 @@ function TilesPage({
     if (!events) {
       return undefined;
     }
-    const tileSize = [16, 16];
+    const {tileSize} = room.tiles[currentLayer];
     const stamp = (origin) => {
       const position = Vector.div([selection[0], selection[1]], tileSize);
       const size = Vector.div([selection[2], selection[3]], tileSize);
@@ -265,7 +265,7 @@ function TilesPage({
         type,
       },
     ) => {
-      const tileSize = [16, 16];
+      const {tileSize} = room.tiles[currentLayer];
       switch (type) {
         case 'touchstart':
         case 'mousedown': {