diff --git a/src/services/questService.ts b/src/services/questService.ts
index 02bf81b7..90b81ff7 100644
--- a/src/services/questService.ts
+++ b/src/services/questService.ts
@@ -68,22 +68,22 @@ export const updateQuestStage = (
         throw new Error(`Progress should always exist when giving keychain triggered items or messages`);
     }
 
-    const questStage = quest.Progress[ChainStage];
+    ChainStage -= 1; // They are 1-indexed in the client, but we need 0-indexing
 
-    // eslint-disable-next-line @typescript-eslint/no-unnecessary-condition
-    if (!questStage) {
-        const questStageIndex =
-            quest.Progress.push({
-                c: questStageUpdate.c ?? 0,
-                i: questStageUpdate.i ?? false,
-                m: questStageUpdate.m ?? false,
-                b: questStageUpdate.b ?? []
-            }) - 1;
-        if (questStageIndex !== ChainStage) {
-            throw new Error(`Quest stage index mismatch: ${questStageIndex} !== ${ChainStage}`);
-        }
-        return;
+    if (ChainStage == quest.Progress.length) {
+        logger.debug(`pushing to quest progress in updateQuestStage`);
+        quest.Progress.push({
+            c: 0,
+            i: false,
+            m: false,
+            b: []
+        });
+    } else if (ChainStage >= quest.Progress.length) {
+        throw new Error(
+            `Quest stage index mismatch: stage is ${ChainStage} but array size is ${quest.Progress.length}`
+        );
     }
+    const questStage = quest.Progress[ChainStage]; // guaranteed in-bounds now
 
     for (const [key, value] of Object.entries(questStageUpdate) as [keyof IQuestStage, number | boolean | any[]][]) {
         (questStage[key] as any) = value;