diff --git a/distribution/openrct2.d.ts b/distribution/openrct2.d.ts
index a3027ee54f..c44e70f382 100644
--- a/distribution/openrct2.d.ts
+++ b/distribution/openrct2.d.ts
@@ -267,7 +267,7 @@ declare global {
         subscribe(hook: "network.leave", callback: (e: NetworkEventArgs) => void): IDisposable;
         subscribe(hook: "ride.ratings.calculate", callback: (e: RideRatingsCalculateArgs) => void): IDisposable;
         subscribe(hook: "action.location", callback: (e: ActionLocationArgs) => void): IDisposable;
-        subscribe(hook: "guest.generation", callback: (id: number) => void): IDisposable;
+        subscribe(hook: "guest.generation", callback: (e: GuestGenerationArgs) => void): IDisposable;
         subscribe(hook: "vehicle.crash", callback: (e: VehicleCrashArgs) => void): IDisposable;
 
         /**
@@ -519,6 +519,10 @@ declare global {
         result: boolean;
     }
 
+    interface GuestGenerationArgs {
+        readonly id: number;
+    }
+
     type VehicleCrashIntoType = "another_vehicle" | "land" | "water";
 
     interface VehicleCrashArgs {