diff --git a/config.yml b/config.yml
index 538aaa4..f1dfa2a 100644
--- a/config.yml
+++ b/config.yml
@@ -1,4 +1,4 @@
-baseURL: "http://blog.morgan.kr"
+baseURL: "http://morgan.kr"
 title: "Morgan's Blog"
 theme: "plain"
 
diff --git a/themes/plain/layouts/partials/style.html b/themes/plain/layouts/partials/style.html
index 730def7..a5a4d1a 100644
--- a/themes/plain/layouts/partials/style.html
+++ b/themes/plain/layouts/partials/style.html
@@ -217,6 +217,7 @@
 
 <script type="text/javascript">
   const userPref = localStorage.getItem("theme");
+
   if (userPref === "dark") {
     document.documentElement.setAttribute("color-mode", "dark");
   } else if (userPref === "light") {
@@ -227,15 +228,16 @@
 
   document.addEventListener("DOMContentLoaded", function() {
     const toggleButton = document.getElementById("toggleColor")
-
-    toggleButton.addEventListener("click", function() {
-      if (document.documentElement.getAttribute("color-mode") === "dark") {
-        document.documentElement.setAttribute("color-mode", "light");
-        localStorage.setItem("theme", "light");
-      } else {
-        document.documentElement.setAttribute("color-mode", "dark");
-        localStorage.setItem("theme", "dark");
-      }
-    });
+    if (toggleButton) {
+      toggleButton.addEventListener("click", function() {
+        if (document.documentElement.getAttribute("color-mode") === "dark") {
+          document.documentElement.setAttribute("color-mode", "light");
+          localStorage.setItem("theme", "light");
+        } else {
+          document.documentElement.setAttribute("color-mode", "dark");
+          localStorage.setItem("theme", "dark");
+        }
+      });
+    }
   });
 </script>
\ No newline at end of file