diff --git a/GanjooRazor/Pages/GanjoorPage.cshtml b/GanjooRazor/Pages/GanjoorPage.cshtml
index cf1e9e1d..a4628f56 100644
--- a/GanjooRazor/Pages/GanjoorPage.cshtml
+++ b/GanjooRazor/Pages/GanjoorPage.cshtml
@@ -203,7 +203,7 @@ else if (Model.ReadOnlyMode)
             paste_strip_class_attributes: true,
             a11y_advanced_options: true,
             skin: (window.matchMedia("(prefers-color-scheme: dark)").matches && localStorage.getItem("scheme") != "light" ? "oxide-dark" : localStorage.getItem("scheme") == "dark" ? "oxide-dark" : ""),
-            content_css: (window.matchMedia("(prefers-color-scheme: dark)").matches && localStorage.getItem("scheme") != "light" ? "dark" : localStorage.getItem("scheme") == "dark" ? "dark" : ""),
+            content_css: (window.matchMedia("(prefers-color-scheme: dark)").matches && localStorage.getItem("scheme") != "light" ? "dark" : localStorage.getItem("scheme") == "dark" ? "dark" : false),
             setup: function(editor) {
                 editor.on('tap', function(e, f) {
                     var editor_id = e.view.frameElement.id.slice(0, -4);