diff --git a/addons/a11y/README.md b/addons/a11y/README.md
index 9a0f1caf0aba..bf3e0827e936 100755
--- a/addons/a11y/README.md
+++ b/addons/a11y/README.md
@@ -58,7 +58,7 @@ addParameters({
   a11y: {
     // ... axe options
     element: '#root', // optional selector which element to inspect
-    config: {} // axe-core configurationOptions (https://github.com/dequelabs/axe-core/blob/develop/doc/API.md#parameters-1)
+    config: {}, // axe-core configurationOptions (https://github.com/dequelabs/axe-core/blob/develop/doc/API.md#parameters-1)
     options: {} // axe-core optionsParameter (https://github.com/dequelabs/axe-core/blob/develop/doc/API.md#options-parameter)
   },
 });