diff --git a/docs/plans/NEO-54-implementation-plan.md b/docs/plans/NEO-54-implementation-plan.md
index 4b96a84..f900cf1 100644
--- a/docs/plans/NEO-54-implementation-plan.md
+++ b/docs/plans/NEO-54-implementation-plan.md
@@ -115,7 +115,7 @@
 
 | Path | Rationale |
 |------|-----------|
-| `server/NeonSprawl.Server/Program.cs` | Register **`AddPlayerInventoryStore`** after item catalog. |
+| `server/NeonSprawl.Server/Game/Items/ItemCatalogServiceCollectionExtensions.cs` | Chain **`AddPlayerInventoryStore`** after item catalog registration (avoids bare `Program.cs` change). |
 | `server/NeonSprawl.Server.Tests/InMemoryWebApplicationFactory.cs` | Force in-memory inventory store; strip Postgres inventory registration in tests. |
 | `server/README.md` | Inventory persistence subsection: slot counts, reason codes, migration note (HTTP in NEO-55). |
 | `docs/decomposition/modules/E3_M3_ItemizationAndInventorySchema.md` | **Related implementation slices** — inventory store + engine bullet (NEO-54). |