diff --git a/src/app/books/[bookId]/page.tsx b/src/app/books/[bookId]/page.tsx
index ca99378..e927795 100644
--- a/src/app/books/[bookId]/page.tsx
+++ b/src/app/books/[bookId]/page.tsx
@@ -5,6 +5,7 @@ import { BookService } from "@/lib/services/book.service";
 import { notFound } from "next/navigation";
 import { withPageTiming } from "@/lib/hoc/withPageTiming";
 import { KomgaBookWithPages } from "@/types/komga";
+import { ErrorMessage } from "@/components/ui/ErrorMessage";
 
 async function BookPage({ params }: { params: { bookId: string } }) {
   try {
@@ -17,7 +18,11 @@ async function BookPage({ params }: { params: { bookId: string } }) {
     );
   } catch (error) {
     console.error("Erreur:", error);
-    notFound();
+    return (
+      <div className="container py-8 space-y-8">
+        <ErrorMessage error={error as Error} errorCode="BOOK_FETCH_ERROR" />
+      </div>
+    );
   }
 }
 
diff --git a/src/app/page.tsx b/src/app/page.tsx
index 028737b..8b6fc06 100644
--- a/src/app/page.tsx
+++ b/src/app/page.tsx
@@ -4,7 +4,9 @@ import { redirect } from "next/navigation";
 import { revalidatePath } from "next/cache";
 import { withPageTiming } from "@/lib/hoc/withPageTiming";
 import { ErrorMessage } from "@/components/ui/ErrorMessage";
+import { ERROR_CODES } from "@/constants/errorCodes";
 import { HomeData } from "@/lib/services/home.service";
+import { AppError } from "@/utils/errors";
 
 async function refreshHome() {
   "use server";
@@ -26,7 +28,7 @@ async function HomePage() {
     return <HomeContent data={data} refreshHome={refreshHome} />;
   } catch (error) {
     // Si l'erreur indique une configuration manquante, rediriger vers les préférences
-    if (error instanceof Error && error.message.includes("Configuration Komga non trouvée")) {
+    if (error instanceof AppError && error.code === ERROR_CODES.KOMGA.MISSING_CONFIG) {
       redirect("/settings");
     }