diff --git a/modules/cms-kit/src/Volo.CmsKit.Common.Web/Renderers/MarkdownToHtmlRenderer.cs b/modules/cms-kit/src/Volo.CmsKit.Common.Web/Renderers/MarkdownToHtmlRenderer.cs
index d2e485a693..9dd5555051 100644
--- a/modules/cms-kit/src/Volo.CmsKit.Common.Web/Renderers/MarkdownToHtmlRenderer.cs
+++ b/modules/cms-kit/src/Volo.CmsKit.Common.Web/Renderers/MarkdownToHtmlRenderer.cs
@@ -1,4 +1,5 @@
-using System.Collections.Generic;
+using System;
+using System.Collections.Generic;
 using System.Linq;
 using System.Text.RegularExpressions;
 using System.Threading.Tasks;
@@ -34,7 +35,7 @@ public class MarkdownToHtmlRenderer : IMarkdownToHtmlRenderer, ITransientDepende
             html = _htmlSanitizer.Sanitize(html);
         }
         
-        if(referralLinks != null)
+        if(!referralLinks.IsNullOrWhiteSpace())
         {
             html = SetReferralLinks(html, referralLinks);
         }
diff --git a/modules/cms-kit/src/Volo.CmsKit.Public.Web/Pages/CmsKit/Shared/Components/Commenting/CommentingViewComponent.cs b/modules/cms-kit/src/Volo.CmsKit.Public.Web/Pages/CmsKit/Shared/Components/Commenting/CommentingViewComponent.cs
index c1d1ed4a4a..304cfec687 100644
--- a/modules/cms-kit/src/Volo.CmsKit.Public.Web/Pages/CmsKit/Shared/Components/Commenting/CommentingViewComponent.cs
+++ b/modules/cms-kit/src/Volo.CmsKit.Public.Web/Pages/CmsKit/Shared/Components/Commenting/CommentingViewComponent.cs
@@ -101,12 +101,12 @@ public class CommentingViewComponent : AbpViewComponent
     private async Task ConvertMarkdownTextsToHtml(CommentingViewModel viewModel)
     {
         viewModel.RawCommentTexts = new Dictionary<Guid, string>();
-        var referralLinks = viewModel.ReferralLinks?.ToArray();
+        var referralLinks = viewModel.ReferralLinks?.JoinAsString(" ");
 
         foreach (var comment in viewModel.Comments)
         {
             viewModel.RawCommentTexts.Add(comment.Id, comment.Text);
-            comment.Text = await MarkdownToHtmlRenderer.RenderAsync(comment.Text, allowHtmlTags: false, preventXSS: true, referralLinks: referralLinks.JoinAsString(" "));
+            comment.Text = await MarkdownToHtmlRenderer.RenderAsync(comment.Text, allowHtmlTags: false, preventXSS: true, referralLinks: referralLinks);
 
             foreach (var reply in comment.Replies)
             {