diff --git a/api/services/workflow_app_service.py b/api/services/workflow_app_service.py
index 615a1c3093..7d313bbc30 100644
--- a/api/services/workflow_app_service.py
+++ b/api/services/workflow_app_service.py
@@ -89,17 +89,15 @@ class WorkflowAppService:
             account = session.scalar(
                 select(Account).where(Account.email == created_by_account)
             )
-            if account:
-                stmt = stmt.join(
-                    Account,
-                    and_(
-                        WorkflowAppLog.created_by == Account.id,
-                        WorkflowAppLog.created_by_role == CreatorUserRole.ACCOUNT,
-                        Account.id == account.id,
-                    ),
-                )
-            else:
-                stmt = stmt.where(False)
+            account_id = account.id if account else None
+            stmt = stmt.join(
+                Account,
+                and_(
+                    WorkflowAppLog.created_by == Account.id,
+                    WorkflowAppLog.created_by_role == CreatorUserRole.ACCOUNT,
+                    Account.id == account_id,
+                ),
+            )
 
         stmt = stmt.order_by(WorkflowAppLog.created_at.desc())
 
diff --git a/api/tests/test_containers_integration_tests/services/test_workflow_app_service.py b/api/tests/test_containers_integration_tests/services/test_workflow_app_service.py
index ce33116222..9e0510a0f7 100644
--- a/api/tests/test_containers_integration_tests/services/test_workflow_app_service.py
+++ b/api/tests/test_containers_integration_tests/services/test_workflow_app_service.py
@@ -826,7 +826,7 @@ class TestWorkflowAppService:
             page=1, 
             limit=20
         )
-        assert result_with_old_email["total"] == 0
+        assert result_with_unknown_email["total"] == 0
 
         account.email = original_email
         db_session_with_containers.commit()