diff --git a/src/app/layout.tsx b/src/app/layout.tsx
index c584f72..5bb5a79 100644
--- a/src/app/layout.tsx
+++ b/src/app/layout.tsx
@@ -19,8 +19,7 @@ const themeScript = `
   document.documentElement.dataset.siteLoading = 'true';
   try {
     const savedTheme = localStorage.getItem('portfolio-theme');
-    const systemTheme = matchMedia('(prefers-color-scheme: dark)').matches ? 'dark' : 'light';
-    document.documentElement.dataset.theme = savedTheme || systemTheme;
+    document.documentElement.dataset.theme = savedTheme === 'dark' ? 'dark' : 'light';
   } catch {}
 `;
 
diff --git a/src/context/ThemeContext.tsx b/src/context/ThemeContext.tsx
index 3025781..3e1b7f6 100644
--- a/src/context/ThemeContext.tsx
+++ b/src/context/ThemeContext.tsx
@@ -21,10 +21,7 @@ export const ThemeProvider: React.FC<{ children: React.ReactNode }> = ({ childre
 
   useEffect(() => {
     const savedTheme = localStorage.getItem('portfolio-theme') as Theme | null;
-    const systemTheme: Theme = window.matchMedia('(prefers-color-scheme: dark)').matches
-      ? 'dark'
-      : 'light';
-    const initialTheme = savedTheme || systemTheme;
+    const initialTheme: Theme = savedTheme === 'dark' ? 'dark' : 'light';
     setThemeState(initialTheme);
     document.documentElement.setAttribute('data-theme', initialTheme);
   }, []);