diff --git a/src/components/theme-changer/index.jsx b/src/components/theme-changer/index.jsx
index 67d9baa..77f86a7 100644
--- a/src/components/theme-changer/index.jsx
+++ b/src/components/theme-changer/index.jsx
@@ -7,7 +7,9 @@ const ThemeChanger = ({ theme, setTheme, loading }) => {
   const changeTheme = (e, selectedTheme) => {
     e.preventDefault();
     document.querySelector('html').setAttribute('data-theme', selectedTheme);
-    localStorage.setItem('gitprofile-theme', selectedTheme);
+
+    typeof window !== 'undefined' &&
+      localStorage.setItem('gitprofile-theme', selectedTheme);
 
     setTheme(selectedTheme);
   };
diff --git a/src/helpers/utils.jsx b/src/helpers/utils.jsx
index efa1272..d13f7f0 100644
--- a/src/helpers/utils.jsx
+++ b/src/helpers/utils.jsx
@@ -8,6 +8,7 @@ export const getInitialTheme = () => {
   }
 
   if (
+    typeof window !== 'undefined' &&
     !(localStorage.getItem('gitprofile-theme') === null) &&
     config.themeConfig.themes.includes(localStorage.getItem('gitprofile-theme'))
   ) {