diff --git a/src/core/execution/nation/NationWarshipBehavior.ts b/src/core/execution/nation/NationWarshipBehavior.ts
index d476e5653..df240f03f 100644
--- a/src/core/execution/nation/NationWarshipBehavior.ts
+++ b/src/core/execution/nation/NationWarshipBehavior.ts
@@ -136,6 +136,11 @@ export class NationWarshipBehavior {
     enemy: Player,
     reason: "trade" | "transport",
   ): void {
+    // Don't retaliate against ourselves (e.g. own nuke destroyed own ship)
+    if (enemy === this.player) {
+      return;
+    }
+
     // Don't send too many warships
     if (this.player.units(UnitType.Warship).length >= 10) {
       return;