diff --git a/python/lsst/daf/butler/registry/sql_registry.py b/python/lsst/daf/butler/registry/sql_registry.py
index 60f9edd79e..b31f69bedd 100644
--- a/python/lsst/daf/butler/registry/sql_registry.py
+++ b/python/lsst/daf/butler/registry/sql_registry.py
@@ -276,7 +276,8 @@ def isWriteable(self) -> bool:
 
     def copy(self, defaults: RegistryDefaults | None = None) -> SqlRegistry:
         """Create a new `SqlRegistry` backed by the same data repository
-        as this one, but independent defaults and database connection.
+        as this one and sharing a database connection pool with it, but with
+        independent defaults and database sessions.
 
         Parameters
         ----------