diff --git a/front/src/applications/stdcm/components/StdcmHeader.tsx b/front/src/applications/stdcm/components/StdcmHeader.tsx
index 4e82c10b3f6..3497bbf954a 100644
--- a/front/src/applications/stdcm/components/StdcmHeader.tsx
+++ b/front/src/applications/stdcm/components/StdcmHeader.tsx
@@ -22,18 +22,18 @@ const StdcmHeader = ({ isDebugMode, onDebugModeToggle }: StdcmHeaderProps) => {
           {t('notificationTitle')}
         </span>
       </div>
-
-      <div className="stdcm-header_debug">
-        <button
-          type="button"
-          aria-label="stdcm-debug"
-          className={cx({ 'debug-on': isDebugMode, 'debug-off': !isDebugMode })}
-          onClick={() => onDebugModeToggle(!isDebugMode)}
-          disabled={!isSuperUser}
-        >
-          <Bug />
-        </button>
-      </div>
+      {isSuperUser && (
+        <div className="stdcm-header_debug">
+          <button
+            type="button"
+            aria-label="stdcm-debug"
+            className={cx({ 'debug-on': isDebugMode, 'debug-off': !isDebugMode })}
+            onClick={() => onDebugModeToggle(!isDebugMode)}
+          >
+            <Bug />
+          </button>
+        </div>
+      )}
     </div>
   );
 };
diff --git a/front/src/main/app.tsx b/front/src/main/app.tsx
index b682965cb8d..48eaaa797cb 100644
--- a/front/src/main/app.tsx
+++ b/front/src/main/app.tsx
@@ -122,12 +122,12 @@ export default function App() {
     // Blindly dispatch current front version for storage
     dispatch(updateLastInterfaceVersion(import.meta.env.OSRD_GIT_DESCRIBE));
   }, []);
-  const { isUserLogged, isUserRolesFetched } = useAuth();
+  const { isLoading } = useAuth();
   return (
     <Suspense fallback={<Loader />}>
       <NotificationsState />
-      {isUserLogged && isUserRolesFetched && <RouterProvider router={router} />}
-      {(!isUserLogged || !isUserRolesFetched) && <Loader />}
+      {!isLoading && <RouterProvider router={router} />}
+      {isLoading && <Loader />}
     </Suspense>
   );
 }
diff --git a/front/src/utils/hooks/OsrdAuth.ts b/front/src/utils/hooks/OsrdAuth.ts
index f54bc7e3dc0..80f8dadce09 100644
--- a/front/src/utils/hooks/OsrdAuth.ts
+++ b/front/src/utils/hooks/OsrdAuth.ts
@@ -1,4 +1,4 @@
-import { useEffect, useState } from 'react';
+import { useEffect } from 'react';
 
 import { useDispatch, useSelector } from 'react-redux';
 
@@ -11,12 +11,10 @@ type AuthHookData = {
   username?: string;
   isUserLogged: boolean;
   isLoading: boolean;
-  isUserRolesFetched: boolean;
   logout: () => void;
 };
 
 function useAuth(): AuthHookData {
-  const [isUserRolesFetched, setIsUserRolesFetched] = useState(false);
   const isUserLogged = useSelector(getIsUserLogged);
   const username = useSelector(getUsername);
   const dispatch = useDispatch();
@@ -39,15 +37,13 @@ function useAuth(): AuthHookData {
   useEffect(() => {
     if (data) {
       dispatch(setUserRoles(data?.builtin));
-      setIsUserRolesFetched(true);
     }
   }, [isUserLogged, data]);
 
   return {
     username,
     isUserLogged,
-    isLoading: isAuthenticateLoading,
-    isUserRolesFetched,
+    isLoading: isAuthenticateLoading || !data,
     logout,
   };
 }