diff --git a/src/types/client_data.d.ts b/src/types/client_data.d.ts
index 37593e5..193de78 100644
--- a/src/types/client_data.d.ts
+++ b/src/types/client_data.d.ts
@@ -11,7 +11,7 @@ interface HostInformation extends response {
 // Event is only emitted when the JoinGame event is successful, so there is no
 // success indicator in this response
 interface NewPlayer {
-	player?: string;
+	player: string;
 }
 
 interface GameJoined extends response {