diff --git a/src/app/api/auth/login/route.ts b/src/app/api/auth/login/route.ts
index cce931b..8523be6 100644
--- a/src/app/api/auth/login/route.ts
+++ b/src/app/api/auth/login/route.ts
@@ -1,7 +1,6 @@
 import { NextResponse } from "next/server";
 import { AuthServerService } from "@/lib/services/auth-server.service";
 import { ERROR_CODES } from "@/constants/errorCodes";
-import { getErrorMessage } from "@/utils/errors";
 import { AppError } from "@/utils/errors";
 import { UserData } from "@/lib/services/auth-server.service";
 
@@ -23,7 +22,6 @@ export async function POST(request: Request) {
           {
             error: {
               code: error.code,
-              message: getErrorMessage(error.code),
             },
           },
           { status: 401 }
@@ -37,7 +35,6 @@ export async function POST(request: Request) {
       {
         error: {
           code: ERROR_CODES.AUTH.INVALID_CREDENTIALS,
-          message: getErrorMessage(ERROR_CODES.AUTH.INVALID_CREDENTIALS),
         },
       },
       { status: 500 }
diff --git a/src/app/api/auth/logout/route.ts b/src/app/api/auth/logout/route.ts
index 805f604..d31dbe9 100644
--- a/src/app/api/auth/logout/route.ts
+++ b/src/app/api/auth/logout/route.ts
@@ -1,7 +1,6 @@
 import { NextResponse } from "next/server";
 import { cookies } from "next/headers";
 import { ERROR_CODES } from "@/constants/errorCodes";
-import { getErrorMessage } from "@/utils/errors";
 
 export async function POST() {
   try {
@@ -14,7 +13,6 @@ export async function POST() {
       {
         error: {
           code: ERROR_CODES.AUTH.LOGOUT_ERROR,
-          message: getErrorMessage(ERROR_CODES.AUTH.LOGOUT_ERROR),
         },
       },
       { status: 500 }
diff --git a/src/app/api/auth/register/route.ts b/src/app/api/auth/register/route.ts
index 06a8cc5..7d2693e 100644
--- a/src/app/api/auth/register/route.ts
+++ b/src/app/api/auth/register/route.ts
@@ -2,7 +2,6 @@ import { NextResponse } from "next/server";
 import { AuthServerService, UserData } from "@/lib/services/auth-server.service";
 import { ERROR_CODES } from "@/constants/errorCodes";
 import { AppError } from "@/utils/errors";
-import { getErrorMessage } from "@/utils/errors";
 
 export async function POST(request: Request) {
   try {
@@ -27,7 +26,6 @@ export async function POST(request: Request) {
           {
             error: {
               code: error.code,
-              message: getErrorMessage(error.code),
             },
           },
           { status }
@@ -41,7 +39,6 @@ export async function POST(request: Request) {
       {
         error: {
           code: ERROR_CODES.AUTH.INVALID_USER_DATA,
-          message: getErrorMessage(ERROR_CODES.AUTH.INVALID_USER_DATA),
         },
       },
       { status: 500 }
diff --git a/src/app/libraries/[libraryId]/page.tsx b/src/app/libraries/[libraryId]/page.tsx
index ba2bd51..2c3a6d8 100644
--- a/src/app/libraries/[libraryId]/page.tsx
+++ b/src/app/libraries/[libraryId]/page.tsx
@@ -8,6 +8,8 @@ import { ErrorMessage } from "@/components/ui/ErrorMessage";
 import { LibraryResponse } from "@/types/library";
 import { KomgaSeries, KomgaLibrary } from "@/types/komga";
 import { UserPreferences } from "@/types/preferences";
+import { ERROR_CODES } from "@/constants/errorCodes";
+
 interface PageProps {
   params: { libraryId: string };
   searchParams: { page?: string; unread?: string; search?: string };
@@ -90,17 +92,20 @@ async function LibraryPage({ params, searchParams }: PageProps) {
       </div>
     );
   } catch (error) {
+    if (error instanceof Error) {
+      return (
+        <div className="container py-8 space-y-8">
+          <div className="flex items-center justify-between">
+            <h1 className="text-3xl font-bold">Séries</h1>
+            <RefreshButton libraryId={params.libraryId} refreshLibrary={refreshLibrary} />
+          </div>
+          <ErrorMessage errorCode="SERIES_FETCH_ERROR" />
+        </div>
+      );
+    }
     return (
       <div className="container py-8 space-y-8">
-        <div className="flex items-center justify-between">
-          <h1 className="text-3xl font-bold">Séries</h1>
-          <RefreshButton libraryId={params.libraryId} refreshLibrary={refreshLibrary} />
-        </div>
-        <ErrorMessage
-          message={
-            error instanceof Error ? error.message : "Erreur lors de la récupération des séries"
-          }
-        />
+        <ErrorMessage errorCode="SERIES_FETCH_ERROR" />
       </div>
     );
   }
diff --git a/src/app/page.tsx b/src/app/page.tsx
index 8ce3f3c..df4a5be 100644
--- a/src/app/page.tsx
+++ b/src/app/page.tsx
@@ -5,7 +5,7 @@ import { revalidatePath } from "next/cache";
 import { withPageTiming } from "@/lib/hoc/withPageTiming";
 import { ErrorMessage } from "@/components/ui/ErrorMessage";
 import { HomeData } from "@/lib/services/home.service";
-
+import { ERROR_CODES } from "@/constants/errorCodes";
 async function refreshHome() {
   "use server";
 
@@ -32,9 +32,7 @@ async function HomePage() {
 
     return (
       <main className="container mx-auto px-4 py-8">
-        <ErrorMessage
-          message={error instanceof Error ? error.message : "Une erreur est survenue"}
-        />
+        <ErrorMessage errorCode="HOME_FETCH_ERROR" />
       </main>
     );
   }
diff --git a/src/app/series/[seriesId]/page.tsx b/src/app/series/[seriesId]/page.tsx
index 7269545..f6064f6 100644
--- a/src/app/series/[seriesId]/page.tsx
+++ b/src/app/series/[seriesId]/page.tsx
@@ -78,11 +78,7 @@ async function SeriesPage({ params, searchParams }: PageProps) {
     return (
       <div className="container py-8 space-y-8">
         <h1 className="text-3xl font-bold">Série</h1>
-        <ErrorMessage
-          message={
-            error instanceof Error ? error.message : "Erreur lors de la récupération de la série"
-          }
-        />
+        <ErrorMessage errorCode="SERIES_FETCH_ERROR" />
       </div>
     );
   }
diff --git a/src/components/auth/LoginForm.tsx b/src/components/auth/LoginForm.tsx
index ef88831..f35955c 100644
--- a/src/components/auth/LoginForm.tsx
+++ b/src/components/auth/LoginForm.tsx
@@ -89,7 +89,7 @@ export function LoginForm({ from }: LoginFormProps) {
           {t("login.form.remember")}
         </label>
       </div>
-      {error && <ErrorMessage message={error.message} variant="form" />}
+      {error && <ErrorMessage errorCode={error.code} variant="form" />}
       <button
         type="submit"
         disabled={isLoading}
diff --git a/src/components/auth/RegisterForm.tsx b/src/components/auth/RegisterForm.tsx
index 7df3f73..21ba36f 100644
--- a/src/components/auth/RegisterForm.tsx
+++ b/src/components/auth/RegisterForm.tsx
@@ -5,7 +5,6 @@ import { useRouter } from "next/navigation";
 import { authService } from "@/lib/services/auth.service";
 import { AuthError } from "@/types/auth";
 import { ERROR_CODES } from "@/constants/errorCodes";
-import { getErrorMessage } from "@/utils/errors";
 import { ErrorMessage } from "@/components/ui/ErrorMessage";
 import { useTranslate } from "@/hooks/useTranslate";
 
@@ -32,7 +31,6 @@ export function RegisterForm({ from }: RegisterFormProps) {
     if (password !== confirmPassword) {
       setError({
         code: ERROR_CODES.AUTH.PASSWORD_MISMATCH,
-        message: getErrorMessage(ERROR_CODES.AUTH.PASSWORD_MISMATCH),
       });
       setIsLoading(false);
       return;
@@ -99,7 +97,7 @@ export function RegisterForm({ from }: RegisterFormProps) {
           className="flex h-10 w-full rounded-md border border-input bg-background px-3 py-2 text-sm ring-offset-background file:border-0 file:bg-transparent file:text-sm file:font-medium placeholder:text-muted-foreground focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2 disabled:cursor-not-allowed disabled:opacity-50"
         />
       </div>
-      {error && <ErrorMessage message={error.message} variant="form" />}
+      {error && <ErrorMessage errorCode={error.code} variant="form" />}
       <button
         type="submit"
         disabled={isLoading}
diff --git a/src/components/settings/ClientSettings.tsx b/src/components/settings/ClientSettings.tsx
index 046b8f1..388c5cc 100644
--- a/src/components/settings/ClientSettings.tsx
+++ b/src/components/settings/ClientSettings.tsx
@@ -271,7 +271,7 @@ export function ClientSettings({ initialConfig, initialTTLConfig }: ClientSettin
       {/* Messages de succès/erreur */}
       {error && (
         <div className="rounded-md bg-destructive/15 p-4">
-          <p className="text-sm text-destructive">{error.message}</p>
+          <p className="text-sm text-destructive">{t(`errors.${error.code}`)}</p>
         </div>
       )}
       {success && (
diff --git a/src/components/ui/ErrorMessage.tsx b/src/components/ui/ErrorMessage.tsx
index 87c9732..d3e14af 100644
--- a/src/components/ui/ErrorMessage.tsx
+++ b/src/components/ui/ErrorMessage.tsx
@@ -1,11 +1,17 @@
+"use client";
+
 import { AlertCircle } from "lucide-react";
+import { useTranslate } from "@/hooks/useTranslate";
 
 interface ErrorMessageProps {
-  message: string;
+  errorCode: string;
   variant?: "default" | "form";
 }
 
-export const ErrorMessage = ({ message, variant = "default" }: ErrorMessageProps) => {
+export const ErrorMessage = ({ errorCode, variant = "default" }: ErrorMessageProps) => {
+  const { t } = useTranslate();
+  const message = t(`errors.${errorCode}`);
+
   if (variant === "form") {
     return (
       <div
diff --git a/src/i18n/messages/en/common.json b/src/i18n/messages/en/common.json
index 44c5b78..e9a22d7 100644
--- a/src/i18n/messages/en/common.json
+++ b/src/i18n/messages/en/common.json
@@ -232,5 +232,18 @@
       "pages": "{current}/{total} pages",
       "totalPages": "{count} pages"
     }
+  },
+  "errors": {
+    "AUTH_INVALID_CREDENTIALS": "Invalid credentials",
+    "AUTH_PASSWORD_MISMATCH": "Passwords do not match",
+    "AUTH_EMAIL_EXISTS": "Email already exists",
+    "AUTH_PASSWORD_NOT_STRONG": "Password is not strong enough",
+    "AUTH_LOGOUT_ERROR": "Logout error",
+    "AUTH_INVALID_USER_DATA": "Invalid user data",
+    "AUTH_UNAUTHENTICATED": "Unauthenticated",
+
+    "SERIES_FETCH_ERROR": "Error fetching series",
+    "HOME_FETCH_ERROR": "Error fetching home",
+    "SERIES_NO_BOOKS_FOUND": "No books found in the series"
   }
 }
diff --git a/src/i18n/messages/fr/common.json b/src/i18n/messages/fr/common.json
index 75867a8..7f6b3f3 100644
--- a/src/i18n/messages/fr/common.json
+++ b/src/i18n/messages/fr/common.json
@@ -232,5 +232,18 @@
       "pages": "{current}/{total} pages",
       "totalPages": "{count} pages"
     }
+  },
+  "errors": {
+    "AUTH_INVALID_CREDENTIALS": "Identifiants invalides",
+    "AUTH_PASSWORD_MISMATCH": "Les mots de passe ne correspondent pas",
+    "AUTH_EMAIL_EXISTS": "Cette adresse email existe déjà",
+    "AUTH_PASSWORD_NOT_STRONG": "Le mot de passe n'est pas assez fort",
+    "AUTH_LOGOUT_ERROR": "Erreur lors de la déconnexion",
+    "AUTH_INVALID_USER_DATA": "Données utilisateur invalides",
+    "AUTH_UNAUTHENTICATED": "Non authentifié",
+
+    "SERIES_FETCH_ERROR": "Erreur lors de la récupération des séries",
+    "HOME_FETCH_ERROR": "Erreur lors de la récupération de l'accueil",
+    "SERIES_NO_BOOKS_FOUND": "Aucun livre trouvé dans la série"
   }
 }
diff --git a/src/lib/services/auth.service.ts b/src/lib/services/auth.service.ts
index f311f47..df30a79 100644
--- a/src/lib/services/auth.service.ts
+++ b/src/lib/services/auth.service.ts
@@ -2,7 +2,6 @@
 
 import { AuthError } from "@/types/auth";
 import { ERROR_CODES } from "@/constants/errorCodes";
-import { getErrorMessage } from "@/utils/errors";
 
 class AuthService {
   private static instance: AuthService;
@@ -42,7 +41,6 @@ class AuthService {
       }
       throw {
         code: ERROR_CODES.AUTH.INVALID_CREDENTIALS,
-        message: getErrorMessage(ERROR_CODES.AUTH.INVALID_CREDENTIALS),
       } as AuthError;
     }
   }
@@ -70,7 +68,6 @@ class AuthService {
       }
       throw {
         code: ERROR_CODES.AUTH.INVALID_USER_DATA,
-        message: getErrorMessage(ERROR_CODES.AUTH.INVALID_USER_DATA),
       } as AuthError;
     }
   }
@@ -94,7 +91,6 @@ class AuthService {
       }
       throw {
         code: ERROR_CODES.AUTH.LOGOUT_ERROR,
-        message: getErrorMessage(ERROR_CODES.AUTH.LOGOUT_ERROR),
       } as AuthError;
     }
   }
diff --git a/src/types/auth.ts b/src/types/auth.ts
index 2df8363..7096c35 100644
--- a/src/types/auth.ts
+++ b/src/types/auth.ts
@@ -14,7 +14,6 @@ export interface AuthState {
 
 export interface AuthError {
   code: ErrorCode;
-  message: string;
 }
 
 // Deprecated - Use ErrorCode from @/constants/errorCodes instead