diff --git a/front/src/hooks/useFetch.ts b/front/src/hooks/useFetch.ts
index 327ba63..e20a86e 100644
--- a/front/src/hooks/useFetch.ts
+++ b/front/src/hooks/useFetch.ts
@@ -29,7 +29,7 @@ const fallbackError = <T>(res: UseFetchReturn<T>) => (
     gotError(res) ? res.error : res.data
 )
 
-function useFetch<R, T>(
+function useFetch<R, T extends NonNullable<unknown>>(
     url: string,
     method: RequestInit['method'],
     needAuth: boolean,
diff --git a/front/src/hooks/useSend.ts b/front/src/hooks/useSend.ts
index 48345bd..12e1839 100644
--- a/front/src/hooks/useSend.ts
+++ b/front/src/hooks/useSend.ts
@@ -4,7 +4,7 @@ import { useNavigate } from 'react-router-dom'
 import { getToken } from '../utils/auth'
 import { handleHTTPErrors, isAborted } from '../utils'
 
-function useSend<R, T>(
+function useSend<R, T extends NonNullable<unknown>>(
     url: string,
     method: RequestInit['method'],
     needAuth: boolean,