diff --git a/README.md b/README.md
index 56c1a1f..a342312 100644
--- a/README.md
+++ b/README.md
@@ -184,8 +184,8 @@ $.modal.defaults = {
   closeText: 'Close',     // Text content for the close <a> tag.
   closeClass: '',         // Add additional class(es) to the close <a> tag.
   showClose: true,        // Shows a (X) icon/link in the top-right corner
-  modalClass: "modal",    // CSS class added to the element being displayed in the modal.
-  blockerClass: "modal",  // CSS class added to the overlay (blocker).
+  modalClass: 'modal',    // CSS class added to the element being displayed in the modal.
+  blockerClass: 'blocker',  // CSS class added to the overlay (blocker).
 
   // HTML appended to the default spinner during AJAX requests.
   spinnerHtml: '<div class="rect1"></div><div class="rect2"></div><div class="rect3"></div><div class="rect4"></div>',