diff --git a/src/app/components/challenge-card/challenge-card.component.html b/src/app/components/challenge-card/challenge-card.component.html
index faba124..1a9eb46 100644
--- a/src/app/components/challenge-card/challenge-card.component.html
+++ b/src/app/components/challenge-card/challenge-card.component.html
@@ -17,8 +17,7 @@
             <ion-button
                     fill="clear"
                     class="m-0 p-0 min-h-0 text-[11px] font-black bg-black text-white rounded-3xl"
-                    style="--padding-top: 4px; --padding-bottom: 4px;"
-            >
+                    style="--padding-top: 4px; --padding-bottom: 4px;">
                 Voir ⭢
             </ion-button>
         </div>
diff --git a/src/app/services/api/model/get-random-challenge-dto.ts b/src/app/services/api/model/get-random-challenge-dto.ts
index f3ea516..a8033e0 100644
--- a/src/app/services/api/model/get-random-challenge-dto.ts
+++ b/src/app/services/api/model/get-random-challenge-dto.ts
@@ -14,5 +14,6 @@ export interface GetRandomChallengeDto {
     libelle?: string | null;
     duration?: number;
     isAlreadyPast?: boolean;
+    generatedAt?: string | null;
 }
 
diff --git a/src/app/services/api/model/random-challenge-proof-request.ts b/src/app/services/api/model/random-challenge-proof-request.ts
index 79f3833..c2e29f0 100644
--- a/src/app/services/api/model/random-challenge-proof-request.ts
+++ b/src/app/services/api/model/random-challenge-proof-request.ts
@@ -10,6 +10,6 @@
 
 
 export interface RandomChallengeProofRequest { 
-    proof?: string | null;
+    proof?: Blob | null;
 }
 
diff --git a/src/app/services/api/model/user-proof-request.ts b/src/app/services/api/model/user-proof-request.ts
index 66595d6..895b96a 100644
--- a/src/app/services/api/model/user-proof-request.ts
+++ b/src/app/services/api/model/user-proof-request.ts
@@ -10,6 +10,6 @@
 
 
 export interface UserProofRequest { 
-    proof?: string | null;
+    proof?: Blob | null;
 }