diff --git a/gateway/gateway-controller/README.md b/gateway/gateway-controller/README.md
index d51057cb8..6e56569d6 100644
--- a/gateway/gateway-controller/README.md
+++ b/gateway/gateway-controller/README.md
@@ -97,7 +97,7 @@ server:
 
 # Storage configuration
 storage:
-  type: sqlite            # "sqlite", "postgres", or "memory"
+  type: sqlite            # "sqlite", "postgres"
   sqlite:
     path: ./data/gateway.db  # SQLite database file path
   postgres:               # Used when type=postgres