diff --git a/addons/info/README.md b/addons/info/README.md
index 3ed18667d52f..176eab32b44b 100644
--- a/addons/info/README.md
+++ b/addons/info/README.md
@@ -130,7 +130,7 @@ setDefaults({
   inline: true, // Displays info inline vs click button to view
   source: true, // Displays the source of story Component
   propTables: [/* Components used in story */], // displays Prop Tables with this components
-  propTablesExclude: [], // Exclude Components from being shown in Prop Tables section
+  propTablesExclude: [], // Exclude Components from being shown in Prop Tables section. Accepts an array of component classes or functions.
   styles: {}, // Overrides styles of addon. The object should follow this shape: https://github.com/storybooks/storybook/blob/master/addons/info/src/components/Story.js#L19. This prop can also accept a function which has the default stylesheet passed as an argument.
   components: {}, // Overrides components used to display markdown
   maxPropsIntoLine: 1, // Max props to display per line in source code