diff --git a/taiga/projects/history/permissions.py b/taiga/projects/history/permissions.py
index 6b97d078..c0adf8d6 100644
--- a/taiga/projects/history/permissions.py
+++ b/taiga/projects/history/permissions.py
@@ -18,35 +18,46 @@ from taiga.base.api.permissions import (TaigaResourcePermission, HasProjectPerm,
                                         IsProjectOwner, AllowAny,
                                         IsObjectOwner, PermissionComponent)
 
+from taiga.permissions.service import is_project_owner
+from taiga.projects.history.services import get_model_from_key, get_pk_from_key
+
 
 class IsCommentDeleter(PermissionComponent):
     def check_permissions(self, request, view, obj=None):
         return obj.delete_comment_user and obj.delete_comment_user.get("pk", "not-pk") == request.user.pk
 
+
 class IsCommentOwner(PermissionComponent):
     def check_permissions(self, request, view, obj=None):
         return obj.user and obj.user.get("pk", "not-pk") == request.user.pk
 
 
+class IsCommentProjectOwner(PermissionComponent):
+    def check_permissions(self, request, view, obj=None):
+        model = get_model_from_key(obj.key)
+        pk = get_pk_from_key(obj.key)
+        project = model.objects.get(pk=pk)
+        return is_project_owner(request.user, project)
+
 class UserStoryHistoryPermission(TaigaResourcePermission):
     retrieve_perms = HasProjectPerm('view_project')
-    delete_comment_perms = IsProjectOwner() | IsCommentOwner()
-    undelete_comment_perms = IsProjectOwner() | IsCommentDeleter()
+    delete_comment_perms = IsCommentProjectOwner() | IsCommentOwner()
+    undelete_comment_perms = IsCommentProjectOwner() | IsCommentDeleter()
 
 
 class TaskHistoryPermission(TaigaResourcePermission):
     retrieve_perms = HasProjectPerm('view_project')
-    delete_comment_perms = IsProjectOwner() | IsCommentOwner()
-    undelete_comment_perms = IsProjectOwner() | IsCommentDeleter()
+    delete_comment_perms = IsCommentProjectOwner() | IsCommentOwner()
+    undelete_comment_perms = IsCommentProjectOwner() | IsCommentDeleter()
 
 
 class IssueHistoryPermission(TaigaResourcePermission):
     retrieve_perms = HasProjectPerm('view_project')
-    delete_comment_perms = IsProjectOwner() | IsCommentOwner()
-    undelete_comment_perms = IsProjectOwner() | IsCommentDeleter()
+    delete_comment_perms = IsCommentProjectOwner() | IsCommentOwner()
+    undelete_comment_perms = IsCommentProjectOwner() | IsCommentDeleter()
 
 
 class WikiHistoryPermission(TaigaResourcePermission):
     retrieve_perms = HasProjectPerm('view_project')
-    delete_comment_perms = IsProjectOwner() | IsCommentOwner()
-    undelete_comment_perms = IsProjectOwner() | IsCommentDeleter()
+    delete_comment_perms = IsCommentProjectOwner() | IsCommentOwner()
+    undelete_comment_perms = IsCommentProjectOwner() | IsCommentDeleter()
diff --git a/taiga/projects/history/services.py b/taiga/projects/history/services.py
index 31e56f99..c79c7eec 100644
--- a/taiga/projects/history/services.py
+++ b/taiga/projects/history/services.py
@@ -81,6 +81,14 @@ def get_model_from_key(key:str) -> object:
     return apps.get_model(class_name)
 
 
+def get_pk_from_key(key:str) -> object:
+    """
+    Get pk from key
+    """
+    class_name, pk = key.split(":", 1)
+    return pk
+
+
 def register_values_implementation(typename:str, fn=None):
     """
     Register values implementation for specified typename.
diff --git a/tests/factories.py b/tests/factories.py
index bc2dddc8..f49e4d49 100644
--- a/tests/factories.py
+++ b/tests/factories.py
@@ -400,6 +400,13 @@ class AttachmentFactory(Factory):
     attached_file = factory.django.FileField(data=b"File contents")
 
 
+class HistoryEntryFactory(Factory):
+    class Meta:
+        model = "history.HistoryEntry"
+        strategy = factory.CREATE_STRATEGY
+
+    type = 1
+
 def create_issue(**kwargs):
     "Create an issue and along with its dependencies."
     owner = kwargs.pop("owner", None)
diff --git a/tests/integration/test_history.py b/tests/integration/test_history.py
index 73334d7d..690b724e 100644
--- a/tests/integration/test_history.py
+++ b/tests/integration/test_history.py
@@ -26,7 +26,7 @@ from .. import factories as f
 from taiga.projects.history import services
 from taiga.projects.history.models import HistoryEntry
 from taiga.projects.history.choices import HistoryType
-
+from taiga.projects.history.services import make_key_from_model_object
 
 pytestmark = pytest.mark.django_db
 
@@ -216,3 +216,19 @@ def test_history_with_only_comment_shouldnot_be_hidden(client):
     assert response.status_code == 200, response.content
     assert qs_all.count() == 1
     assert qs_hidden.count() == 0
+
+
+def test_delete_comment_by_project_owner(client):
+    project = f.create_project()
+    us = f.create_userstory(project=project)
+    membership = f.MembershipFactory.create(project=project, user=project.owner, is_owner=True)
+    key = make_key_from_model_object(us)
+    history_entry = f.HistoryEntryFactory.create(type=HistoryType.change,
+                                                                            comment="testing",
+                                                                            key=key)
+
+    client.login(project.owner)
+    url = reverse("userstory-history-delete-comment", args=(us.id,))
+    url = "%s?id=%s"%(url, history_entry.id)
+    response = client.post(url, content_type="application/json")
+    assert 200 == response.status_code, response.status_code