diff --git a/src/client/graphics/layers/NukeTrajectoryPreviewLayer.ts b/src/client/graphics/layers/NukeTrajectoryPreviewLayer.ts
index fed84489e..447f92d87 100644
--- a/src/client/graphics/layers/NukeTrajectoryPreviewLayer.ts
+++ b/src/client/graphics/layers/NukeTrajectoryPreviewLayer.ts
@@ -246,12 +246,6 @@ export class NukeTrajectoryPreviewLayer implements Layer {
       game: this.game,
       targetTile,
       magnitude: this.game.config().nukeMagnitudes(ghostStructure),
-      allySmallIds: new Set(
-        this.game
-          .myPlayer()
-          ?.allies()
-          .map((a) => a.smallID()),
-      ),
       threshold: this.game.config().nukeAllianceBreakThreshold(),
     });
     // Find the point where SAM can intercept
diff --git a/src/core/execution/NukeExecution.ts b/src/core/execution/NukeExecution.ts
index 9f443474f..9928be095 100644
--- a/src/core/execution/NukeExecution.ts
+++ b/src/core/execution/NukeExecution.ts
@@ -89,7 +89,6 @@ export class NukeExecution implements Execution {
       game: this.mg,
       targetTile: this.dst,
       magnitude,
-      allySmallIds: new Set(this.player.allies().map((a) => a.smallID())),
       threshold: this.mg.config().nukeAllianceBreakThreshold(),
     });
 
diff --git a/src/core/execution/Util.ts b/src/core/execution/Util.ts
index aa394b343..1b51a41fe 100644
--- a/src/core/execution/Util.ts
+++ b/src/core/execution/Util.ts
@@ -39,7 +39,7 @@ export interface NukeAllianceCheckParams {
   game: Game | GameView;
   targetTile: TileRef;
   magnitude: NukeMagnitude;
-  allySmallIds: Set<number>;
+  allySmallIds?: Set<number>;
   threshold: number;
 }
 
@@ -52,7 +52,7 @@ export function wouldNukeBreakAlliance(
 ): boolean {
   const { game, targetTile, magnitude, allySmallIds, threshold } = params;
 
-  if (allySmallIds.size === 0) {
+  if (!allySmallIds || allySmallIds.size === 0) {
     return false;
   }