diff --git a/SVSim.EmulatedEntrypoint/Services/StoryService.cs b/SVSim.EmulatedEntrypoint/Services/StoryService.cs
index 24a91ce..18826b0 100644
--- a/SVSim.EmulatedEntrypoint/Services/StoryService.cs
+++ b/SVSim.EmulatedEntrypoint/Services/StoryService.cs
@@ -522,7 +522,7 @@ public class StoryService : IStoryService
             {
                 // Open inventory tx — skip the load entirely when no rewards (narrative-only
                 // chapters where the only side effect is the progress upsert).
-                await using var tx = await _inv.BeginAsync(viewerId);
+                await using var tx = await _inv.BeginAsync(viewerId, configure: cfg => cfg.Source = GrantSource.StoryFinish);
 
                 // reward_list and story_reward_list have DIFFERENT semantics for reward_num:
                 //   - reward_list:        post-state totals. Client (PlayerStaticData