diff --git a/perun/proxy/utils/oracle2postgresql.py b/perun/proxy/utils/oracle2postgresql.py
index 87c6245d86ecf3d0fe804d94906351b05986d386..523e797127babb8672fdead7ce006f6d01598415 100644
--- a/perun/proxy/utils/oracle2postgresql.py
+++ b/perun/proxy/utils/oracle2postgresql.py
@@ -68,10 +68,10 @@ class Oracle2PostgreSQL:
             metadata,
             Column("id", Integer, primary_key=True, autoincrement=True),
             Column("uid", String(100), nullable=False),
-            Column("sp", String(250), default="%"),
+            Column("sp", String(250), server_default="%"),
             Column("attribute", String(30), nullable=False),
             Column("value", Text),
-            Column("expires", Date, default="9999-12-31"),
+            Column("expires", Date, server_default="9999-12-31"),
             UniqueConstraint("uid", "attribute", "sp", "expires"),
         )