diff --git a/octavia/api/v2/controllers/member.py b/octavia/api/v2/controllers/member.py
index 84f72101fa..99971557fe 100644
--- a/octavia/api/v2/controllers/member.py
+++ b/octavia/api/v2/controllers/member.py
@@ -231,14 +231,14 @@ class MemberController(base.BaseController):
         self._auth_validate_action(context, db_member.project_id,
                                    constants.RBAC_PUT)
 
+        self._validate_pool_id(id, db_member.pool_id)
+
         self._test_lb_and_listener_and_pool_statuses(context.session,
                                                      member=db_member)
         self.repositories.member.update(
             context.session, db_member.id,
             provisioning_status=constants.PENDING_UPDATE)
 
-        self._validate_pool_id(id, db_member.pool_id)
-
         try:
             LOG.info("Sending Update of Member %s to handler", id)
             self.handler.update(db_member, member)
diff --git a/octavia/tests/functional/api/v2/test_member.py b/octavia/tests/functional/api/v2/test_member.py
index 708f77d2e6..f59783daf7 100644
--- a/octavia/tests/functional/api/v2/test_member.py
+++ b/octavia/tests/functional/api/v2/test_member.py
@@ -864,12 +864,18 @@ class TestMember(base.BaseAPITest):
             lb_id=self.lb_id, listener_id=self.listener_id,
             pool_id=self.pool_id, member_id=api_member.get('id'))
 
-    def test_bad_update(self):
+    def test_update_wrong_pool(self):
         api_member = self.create_member(
             self.pool_id, '10.0.0.1', 80).get(self.root_tag)
-        new_member = {'protocol_port': 'ten'}
-        self.put(self.member_path.format(member_id=api_member.get('id')),
-                 self._build_body(new_member), status=400)
+        self.set_lb_status(self.lb_id)
+        new_member = {'monitor_port': '81'}
+        bad_member_path = (
+            self.MEMBERS_PATH.format(pool_id=self.pool_with_listener_id) +
+            '/' + api_member.get('id'))
+        self.put(bad_member_path, self._build_body(new_member), status=404)
+        self.assert_correct_status(
+            lb_id=self.lb_id, listener_id=self.listener_id,
+            pool_id=self.pool_id, member_id=api_member.get('id'))
 
     def test_update_with_bad_handler(self):
         api_member = self.create_member(
diff --git a/releasenotes/notes/fix-update-member-wrong-pool-cccc42db7846d307.yaml b/releasenotes/notes/fix-update-member-wrong-pool-cccc42db7846d307.yaml
new file mode 100644
index 0000000000..37e17993d2
--- /dev/null
+++ b/releasenotes/notes/fix-update-member-wrong-pool-cccc42db7846d307.yaml
@@ -0,0 +1,4 @@
+---
+fixes:
+  - |
+    Fixed updating members with the wrong pool ID locking the load balancer.