diff --git a/scripts/verify-campaign-save-normalization.mjs b/scripts/verify-campaign-save-normalization.mjs
index 56024ee..b824f2c 100644
--- a/scripts/verify-campaign-save-normalization.mjs
+++ b/scripts/verify-campaign-save-normalization.mjs
@@ -768,7 +768,15 @@ try {
               status: 'lost',
               detail: 12,
               rewardGold: '80',
-              targetTile: { x: '4', y: '5', radius: '2' }
+              targetTile: { x: '4', y: '5', radius: '200' }
+            },
+            {
+              id: 'broken-target',
+              label: 'Broken target',
+              achieved: false,
+              detail: 'Bad target tile',
+              rewardGold: 0,
+              targetTile: { x: '-1', y: '5', radius: '2' }
             },
             'broken-objective',
             ...Array.from({ length: 30 }, (_, index) => ({
@@ -879,9 +887,12 @@ try {
     `Expected stale latestBattleId to recover to the latest valid settlement: ${JSON.stringify(malformedHistory)}`
   );
   assert(
-    malformedHistory.battleHistory['first-battle-zhuo-commandery']?.objectives.length === 24 &&
+      malformedHistory.battleHistory['first-battle-zhuo-commandery']?.objectives.length === 24 &&
       malformedHistory.battleHistory['first-battle-zhuo-commandery']?.objectives[0].rewardGold === 80 &&
       malformedHistory.battleHistory['first-battle-zhuo-commandery']?.objectives[0].targetTile?.x === 4 &&
+      malformedHistory.battleHistory['first-battle-zhuo-commandery']?.objectives[0].targetTile?.radius === 99 &&
+      malformedHistory.battleHistory['first-battle-zhuo-commandery']?.objectives[1].id === 'broken-target' &&
+      malformedHistory.battleHistory['first-battle-zhuo-commandery']?.objectives[1].targetTile === undefined &&
       malformedHistory.battleHistory['first-battle-zhuo-commandery']?.objectives[0].status === undefined &&
       malformedHistory.battleHistory['first-battle-zhuo-commandery']?.units.length === 1 &&
       malformedHistory.battleHistory['first-battle-zhuo-commandery']?.units[0].level === 4 &&
diff --git a/src/game/state/campaignState.ts b/src/game/state/campaignState.ts
index 12b81ae..af3f19d 100644
--- a/src/game/state/campaignState.ts
+++ b/src/game/state/campaignState.ts
@@ -277,6 +277,7 @@ const maxCampaignReserveTrainingEntries = 96;
 const maxCampaignSortieAssignmentUnits = 96;
 const maxCampaignDisplayTextLength = 180;
 const maxCampaignNumericValue = 999999;
+const maxCampaignObjectiveTargetRadius = 99;
 
 export const campaignReserveTrainingFocusDefinitions: CampaignReserveTrainingFocusDefinition[] = [
   {
@@ -1129,11 +1130,11 @@ function normalizeObjectiveTargetTile(value: unknown): BattleObjectiveSnapshot['
 
   const x = Math.floor(Number(value.x));
   const y = Math.floor(Number(value.y));
-  if (!Number.isFinite(x) || !Number.isFinite(y)) {
+  if (!Number.isFinite(x) || !Number.isFinite(y) || x < 0 || y < 0) {
     return undefined;
   }
 
-  const radius = normalizeNonNegativeInteger(value.radius);
+  const radius = Math.min(normalizeNonNegativeInteger(value.radius), maxCampaignObjectiveTargetRadius);
   return radius > 0 ? { x, y, radius } : { x, y };
 }