diff --git a/src/core/execution/alliance/BreakAllianceExecution.ts b/src/core/execution/alliance/BreakAllianceExecution.ts
index 848d5ec63..65e2ebc16 100644
--- a/src/core/execution/alliance/BreakAllianceExecution.ts
+++ b/src/core/execution/alliance/BreakAllianceExecution.ts
@@ -3,9 +3,9 @@ import { Execution, Game, Player, PlayerID } from "../../game/Game";
 
 export class BreakAllianceExecution implements Execution {
   private active = true;
-  private requestor: Player;
-  private recipient: Player;
-  private mg: Game;
+  private requestor: Player | null = null;
+  private recipient: Player | null = null;
+  private mg: Game | null = null;
 
   constructor(
     private requestorID: PlayerID,
@@ -33,14 +33,21 @@ export class BreakAllianceExecution implements Execution {
   }
 
   tick(ticks: number): void {
+    if (
+      this.mg === null ||
+      this.requestor === null ||
+      this.recipient === null
+    ) {
+      throw new Error("Not initialized");
+    }
     const alliance = this.requestor.allianceWith(this.recipient);
-    if (alliance == null) {
+    if (alliance === null) {
       consolex.warn("cant break alliance, not allied");
     } else {
       this.requestor.breakAlliance(alliance);
       this.recipient.updateRelation(this.requestor, -200);
       for (const player of this.mg.players()) {
-        if (player != this.requestor) {
+        if (player !== this.requestor) {
           player.updateRelation(this.requestor, -40);
         }
       }