diff --git a/trytond/trytond/backend/postgresql/database.py b/trytond/trytond/backend/postgresql/database.py
index ce73dcdcad..27968f6940 100644
--- a/trytond/trytond/backend/postgresql/database.py
+++ b/trytond/trytond/backend/postgresql/database.py
@@ -221,7 +221,7 @@ class Database(DatabaseInterface):
             for database in list(databases.values()):
                 if ((now - database._last_use).total_seconds() > timeout
                         and database.name != name):
-                    database._connpool.resize(0, 0)
+                    database._connpool.resize(0, 1)
 
         if not (inst := databases.get(name)):
             with cls._lock: