diff --git a/painting/rectangle.js b/painting/rectangle.js
index dbfe3e5..9144606 100644
--- a/painting/rectangle.js
+++ b/painting/rectangle.js
@@ -12,7 +12,7 @@ class Rectangle extends Shape {
     }
     
     static randomOptions() {
-        opts = super.randomOptions();
+        let opts = super.randomOptions();
         
         opts.width = Math.floor(Math.random() * maxWidth);
         opts.height = Math.floor(Math.random() * maxHeight);