diff --git a/SVSim.EmulatedEntrypoint/Controllers/PackController.cs b/SVSim.EmulatedEntrypoint/Controllers/PackController.cs
index 50bf9dd..0a7da0a 100644
--- a/SVSim.EmulatedEntrypoint/Controllers/PackController.cs
+++ b/SVSim.EmulatedEntrypoint/Controllers/PackController.cs
@@ -313,11 +313,14 @@ public class PackController : SVSimController
             return StatusCode(StatusCodes.Status501NotImplemented, new { error = "currency_path_not_implemented" });
 
         // Load viewer via InventoryService transaction with extra includes for pack-open needs.
-        await using var tx = await _inv.BeginAsync(viewerId, HttpContext.RequestAborted, cfg => cfg
-            .WithInclude(v => v.PackOpenCounts)
-            .WithInclude(v => v.GachaPointBalances)
-            .WithInclude(v => v.MissionData)
-            .WithInclude(v => v.FreePackClaims));
+        await using var tx = await _inv.BeginAsync(viewerId, HttpContext.RequestAborted, cfg =>
+        {
+            cfg.Source = GrantSource.PackOpen;
+            cfg.WithInclude(v => v.PackOpenCounts);
+            cfg.WithInclude(v => v.GachaPointBalances);
+            cfg.WithInclude(v => v.MissionData);
+            cfg.WithInclude(v => v.FreePackClaims);
+        });
         var viewer = tx.Viewer;
 
         // Tutorial alias is only valid pre-END. After state>=100 the viewer has already