diff --git a/src/main/javascript/view/OperationView.js b/src/main/javascript/view/OperationView.js
index e4be8004..25a7ec99 100644
--- a/src/main/javascript/view/OperationView.js
+++ b/src/main/javascript/view/OperationView.js
@@ -674,6 +674,7 @@ SwaggerUi.Views.OperationView = Backbone.View.extend({
       $.bbq.pushState('#/', 2);
       Docs.collapseOperation(elem);
     } else {
+      event.preventDefault();
       Docs.expandOperation(elem);
     }
   },