diff --git a/docs/README.md b/docs/README.md
index 0e66e5a..8432131 100644
--- a/docs/README.md
+++ b/docs/README.md
@@ -98,8 +98,8 @@ path.hachureAngle = 90;
 ``` javascript
 var rect = rough.rectangle(10,10,20,100);
 var increaseWidth = function() {
-	if (rect.width < 300) {
-	  rect.width = rect.width + 10;
+  if (rect.width < 300) {
+    rect.width = rect.width + 10;
     setTimeout(increaseWidth, 100);
   }
 };