diff --git a/src/gausskernel/optimizer/commands/tablecmds.cpp b/src/gausskernel/optimizer/commands/tablecmds.cpp
index 80d654d11..4a4e57a97 100755
--- a/src/gausskernel/optimizer/commands/tablecmds.cpp
+++ b/src/gausskernel/optimizer/commands/tablecmds.cpp
@@ -1337,7 +1337,7 @@ static List* AddDefaultOptionsIfNeed(List* options, const char relkind, CreateSt
             }
             if (g_instance.attr.attr_storage.enable_ustore && u_sess->attr.attr_sql.enable_default_ustore_table &&
                 relkind != RELKIND_MATVIEW && !IsSystemNamespace(relnamespace) && !assignedStorageType) {
-                DefElem *def2 = makeDefElem("storage_type", (Node *)makeString(TABLE_ACCESS_METHOD_USTORE));
+                DefElem *def2 = makeDefElem("storage_type", (Node *)makeString(TABLE_ACCESS_METHOD_USTORE_LOWER));
                 res = lappend(options, def2);
             }
         }