diff --git a/src/core/execution/alliance/AllianceRequestExecution.ts b/src/core/execution/alliance/AllianceRequestExecution.ts
index 7fa13f13b..7698b0c82 100644
--- a/src/core/execution/alliance/AllianceRequestExecution.ts
+++ b/src/core/execution/alliance/AllianceRequestExecution.ts
@@ -3,8 +3,8 @@ import { Execution, Game, Player, PlayerID } from "../../game/Game";
 
 export class AllianceRequestExecution implements Execution {
   private active = true;
-  private requestor: Player;
-  private recipient: Player;
+  private requestor: Player | null = null;
+  private recipient: Player | null = null;
 
   constructor(
     private requestorID: PlayerID,
@@ -32,6 +32,9 @@ export class AllianceRequestExecution implements Execution {
   }
 
   tick(ticks: number): void {
+    if (this.requestor === null || this.recipient === null) {
+      throw new Error("Not initialized");
+    }
     if (this.requestor.isFriendly(this.recipient)) {
       consolex.warn("already allied");
     } else if (!this.requestor.canSendAllianceRequest(this.recipient)) {