diff --git a/.zuul.yml b/.zuul.yml
index 48729fd..926f792 100644
--- a/.zuul.yml
+++ b/.zuul.yml
@@ -1,10 +1,12 @@
 ui: mocha-bdd
 browsers:
   - name: chrome
-    version: 49..latest
+    version: 52..latest
   - name: ie
-    version: 9..latest
+    version: 10..latest
+  - name: edge
+    version: 13..latest
   - name: firefox
-    version: 44..latest
+    version: 48..latest
   - name: safari
-    version: 6..latest
+    version: 8..latest
diff --git a/lib/ext/chain.js b/lib/ext/chain.js
index 7b553d8..3751a79 100644
--- a/lib/ext/chain.js
+++ b/lib/ext/chain.js
@@ -7,7 +7,7 @@
 
 export default function(should, Assertion) {
   /**
-   * Simple chaining. It actually do nothing.
+   * Simple chaining to improve readability. Does nothing.
    *
    * @memberOf Assertion
    * @name be