diff --git a/framework/src/Volo.Abp.AspNetCore.Mvc.UI.Theme.Shared/wwwroot/libs/abp/aspnetcore-mvc-ui-theme-shared/toastr/abp-toastr.js b/framework/src/Volo.Abp.AspNetCore.Mvc.UI.Theme.Shared/wwwroot/libs/abp/aspnetcore-mvc-ui-theme-shared/toastr/abp-toastr.js
index 01b29cdfd7..01d92e0cc6 100644
--- a/framework/src/Volo.Abp.AspNetCore.Mvc.UI.Theme.Shared/wwwroot/libs/abp/aspnetcore-mvc-ui-theme-shared/toastr/abp-toastr.js
+++ b/framework/src/Volo.Abp.AspNetCore.Mvc.UI.Theme.Shared/wwwroot/libs/abp/aspnetcore-mvc-ui-theme-shared/toastr/abp-toastr.js
@@ -12,6 +12,12 @@
     /* NOTIFICATION *********************************************/
 
     var showNotification = function (type, message, title, options) {
+        if (!options) {
+            options = {};
+        }
+        if (options.escapeHtml === undefined) {
+            options.escapeHtml = true;
+        }
         toastr[type](message, title, options);
     };