diff --git a/modules/blogging/src/Volo.Blogging.Web/Bundling/PrismjsStyleBundleContributorBloggingExtension.cs b/modules/blogging/src/Volo.Blogging.Web/Bundling/PrismjsStyleBundleContributorBloggingExtension.cs
index 8bd3b1fafa..117c16fa10 100644
--- a/modules/blogging/src/Volo.Blogging.Web/Bundling/PrismjsStyleBundleContributorBloggingExtension.cs
+++ b/modules/blogging/src/Volo.Blogging.Web/Bundling/PrismjsStyleBundleContributorBloggingExtension.cs
@@ -10,6 +10,7 @@ namespace Volo.Blogging.Bundling
     {
         public override void ConfigureBundle(BundleConfigurationContext context)
         {
+            context.Files.ReplaceOne("/libs/prismjs/themes/prism.css","/libs/prismjs/themes/prism-okaidia.css");
             context.Files.AddIfNotContains("/libs/prismjs/plugins/line-highlight/prism-line-highlight.css");
             context.Files.AddIfNotContains("/libs/prismjs/plugins/toolbar/prism-toolbar.css");
         }