diff --git a/berserk/clients/challenges.py b/berserk/clients/challenges.py
index a7e51a6..6c042ed 100644
--- a/berserk/clients/challenges.py
+++ b/berserk/clients/challenges.py
@@ -29,7 +29,7 @@ def create(
         color: Color | None = None,
         variant: Variant | None = None,
         position: str | None = None,
-    ) -> Challenge:
+    ) -> Dict[str, Any]:
         """Challenge another player to a game.
 
         :param username: username of the player to challenge
@@ -173,9 +173,7 @@ def accept(self, challenge_id: str) -> None:
         path = f"/api/challenge/{challenge_id}/accept"
         self._r.post(path)
 
-    def decline(
-        self, challenge_id: str, reason: DeclineReason = "generic"
-    ) -> None:
+    def decline(self, challenge_id: str, reason: DeclineReason = "generic") -> None:
         """Decline an incoming challenge.
 
         :param challenge_id: ID of a challenge
diff --git a/berserk/types/challenges.py b/berserk/types/challenges.py
index 3d6c0dc..b5cebe1 100644
--- a/berserk/types/challenges.py
+++ b/berserk/types/challenges.py
@@ -30,6 +30,7 @@
 
 class User(TypedDict):
     """Challenge User"""
+
     rating: NotRequired[float]
     provisional: NotRequired[bool]
     online: NotRequired[bool]
@@ -55,6 +56,7 @@ class User(TypedDict):
 
 class Variant(TypedDict):
     """Information about a challenge variant."""
+
     key: NotRequired[VariantKey]
     name: NotRequired[str]
     short: NotRequired[str]
@@ -115,4 +117,3 @@ class Challenge(TypedDict):
     initialFen: NotRequired[str]
     declineReason: str
     declineReasonKey: str
-