diff --git a/database_cleanup/models/purge_tables.py b/database_cleanup/models/purge_tables.py
index 3f65f9926c0..1b5db6d3b7f 100644
--- a/database_cleanup/models/purge_tables.py
+++ b/database_cleanup/models/purge_tables.py
@@ -96,12 +96,16 @@ class CleanupPurgeWizardTable(models.TransientModel):
     _name = "cleanup.purge.wizard.table"
     _description = "Purge tables"
 
+    blacklist = [
+        "endpoint_route",  # web-api/endpoint_route_handler
+    ]
+
     @api.model
     def find(self):
         """
         Search for tables and views that cannot be instantiated.
         """
-        known_tables = []
+        known_tables = list(self.blacklist)
         for model in self.env["ir.model"].search([]):
             if model.model not in self.env:
                 continue
diff --git a/database_cleanup/tests/test_purge_tables.py b/database_cleanup/tests/test_purge_tables.py
index a7bda839cec..b2a3bc57bcd 100644
--- a/database_cleanup/tests/test_purge_tables.py
+++ b/database_cleanup/tests/test_purge_tables.py
@@ -1,9 +1,8 @@
 # Copyright 2021 Camptocamp SA
 # License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
-from psycopg2 import ProgrammingError
 
 from odoo.tests.common import tagged
-from odoo.tools import mute_logger
+from odoo.tools import sql
 
 from .common import Common, environment
 
@@ -17,7 +16,12 @@ def test_empty_table(self):
             env.cr.execute("create table database_cleanup_test (test int)")
             wizard = env["cleanup.purge.wizard.table"].create({})
             wizard.purge_all()
-            with self.assertRaises(ProgrammingError):
-                with env.registry.cursor() as cr:
-                    with mute_logger("odoo.sql_db"):
-                        cr.execute("select * from database_cleanup_test")
+            self.assertFalse(sql.table_exists(env.cr, "database_cleanup_test"))
+
+    def test_blacklist(self):
+        """A table mentioned in the blacklist is not purged"""
+        with environment() as env:
+            env.cr.execute("create table if not exists endpoint_route (test int)")
+            wizard = env["cleanup.purge.wizard.table"].create({})
+            wizard.purge_all()
+            self.assertTrue(sql.table_exists(env.cr, "endpoint_route"))