diff --git a/packages/core/src/selected_box.ts b/packages/core/src/selected_box.ts
index c675cb1..80f35d6 100644
--- a/packages/core/src/selected_box.ts
+++ b/packages/core/src/selected_box.ts
@@ -173,7 +173,7 @@ export class SelectedBox {
     const width = remainDecimal(size.width, numPrecision);
     const height = remainDecimal(size.height, numPrecision);
 
-    const textContent = `${width} x ${height}`;
+    const textContent = `${width} × ${height}`;
 
     ctx.save();
     ctx.font = fontStyle;