diff --git a/src/middleware.ts b/src/middleware.ts
index 49667d6..60d5455 100644
--- a/src/middleware.ts
+++ b/src/middleware.ts
@@ -14,8 +14,28 @@ function getLocale(request: NextRequest): string {
     negotiatorHeaders[key] = value;
   });
 
-  const languages = new Negotiator({ headers: negotiatorHeaders }).languages();
-  return match(languages, i18n.locales, i18n.defaultLocale);
+  try {
+    const languages = new Negotiator({ headers: negotiatorHeaders }).languages();
+    // Filter out invalid locale values that would cause Intl.getCanonicalLocales to fail
+    const validLanguages = languages.filter((lang) => {
+      try {
+        Intl.getCanonicalLocales(lang);
+        return true;
+      } catch {
+        return false;
+      }
+    });
+
+    if (validLanguages.length === 0) {
+      return i18n.defaultLocale;
+    }
+
+    return match(validLanguages, i18n.locales, i18n.defaultLocale);
+  } catch (error) {
+    // Fallback to default locale if locale negotiation fails
+    console.error('Locale negotiation error:', error);
+    return i18n.defaultLocale;
+  }
 }
 
 export function middleware(request: NextRequest) {