diff --git a/forwardport/models/project.py b/forwardport/models/project.py
index 40c52093..8b3e1f28 100644
--- a/forwardport/models/project.py
+++ b/forwardport/models/project.py
@@ -34,6 +34,7 @@ from odoo.exceptions import UserError
 from odoo.tools import topological_sort, groupby
 from odoo.tools.appdirs import user_cache_dir
 from odoo.addons.runbot_merge import utils
+from odoo.addons.runbot_merge.models.pull_requests import RPLUS
 
 footer = '\nMore info at https://github.com/odoo/odoo/wiki/Mergebot#forward-port\n'
 
@@ -339,7 +340,7 @@ class PullRequests(models.Model):
                     continue
                 merge_bot = self.repository.project_id.github_prefix
                 # don't update the root ever
-                for pr in filter(lambda p: p.parent_id, self._iter_ancestors()):
+                for pr in (p for p in self._iter_ancestors() if p.parent_id if p.state in RPLUS):
                     # only the author is delegated explicitely on the
                     pr._parse_commands(author, {**comment, 'body': merge_bot + ' r+'}, login)
             elif token == 'close':
diff --git a/forwardport/tests/test_simple.py b/forwardport/tests/test_simple.py
index 46042730..fbce44d0 100644
--- a/forwardport/tests/test_simple.py
+++ b/forwardport/tests/test_simple.py
@@ -498,6 +498,54 @@ def signoff(conf, message):
             return signoff
     raise AssertionError("Failed to find signoff by %s in %s" % (conf, message))
 
+
+def test_redundant_approval(env, config, make_repo, users):
+    """If a forward port sequence has been partially approved, fw-bot r+ should
+    not perform redundant approval as that triggers warning messages.
+    """
+    prod, _ = make_basic(env, config, make_repo)
+    [project] = env['runbot_merge.project'].search([])
+    with prod:
+        prod.make_commits(
+            'a', Commit('p', tree={'x': '0'}),
+            ref='heads/early'
+        )
+        pr0 = prod.make_pr(target='a', head='early')
+        prod.post_status('heads/early', 'success', 'legal/cla')
+        prod.post_status('heads/early', 'success', 'ci/runbot')
+        pr0.post_comment('hansen r+', config['role_reviewer']['token'])
+    env.run_crons()
+    with prod:
+        prod.post_status('staging.a', 'success', 'legal/cla')
+        prod.post_status('staging.a', 'success', 'ci/runbot')
+    env.run_crons()
+    pr0_id, pr1_id = env['runbot_merge.pull_requests'].search([], order='number asc')
+    with prod:
+        prod.post_status(pr1_id.head, 'success', 'legal/cla')
+        prod.post_status(pr1_id.head, 'success', 'ci/runbot')
+    env.run_crons()
+
+    _, _, pr2_id = env['runbot_merge.pull_requests'].search([], order='number asc')
+    assert pr2_id.parent_id == pr1_id
+    assert pr1_id.parent_id == pr0_id
+
+    pr1 = prod.get_pr(pr1_id.number)
+    pr2 = prod.get_pr(pr2_id.number)
+    with prod:
+        pr1.post_comment('hansen r+', config['role_reviewer']['token'])
+    with prod:
+        pr2.post_comment(f'{project.fp_github_name} r+', config['role_reviewer']['token'])
+    env.run_crons()
+
+    assert pr1.comments == [
+        seen(env, pr1, users),
+        (users['user'], 'This PR targets b and is part of the forward-port chain. '
+                        'Further PRs will be created up to c.\n\n'
+                        'More info at https://github.com/odoo/odoo/wiki/Mergebot#forward-port\n'),
+        (users['reviewer'], 'hansen r+'),
+    ]
+
+
 def test_batched(env, config, make_repo, users):
     """ Tests for projects with multiple repos & sync'd branches. Batches
     should be FP'd to batches