diff --git a/paper-icon-button.html b/paper-icon-button.html
index 23a04a1..f1e54b5 100644
--- a/paper-icon-button.html
+++ b/paper-icon-button.html
@@ -8,29 +8,31 @@
-->
@@ -53,7 +55,7 @@
publish: {
/**
- * If true, the ripple expands to a square fill the containing box.
+ * If true, the ripple expands to a square to fill the containing box.
*
* @attribute fill
* @type boolean