diff --git a/posthog/hogql_queries/insights/trends/test/test_trends_query_runner.py b/posthog/hogql_queries/insights/trends/test/test_trends_query_runner.py
index aeadb90d1b199..5ac3c588fd970 100644
--- a/posthog/hogql_queries/insights/trends/test/test_trends_query_runner.py
+++ b/posthog/hogql_queries/insights/trends/test/test_trends_query_runner.py
@@ -1851,7 +1851,7 @@ def test_to_actors_query_options(self):
             IntervalType.DAY,
             [EventsNode(event="$pageview")],
             None,
-            None,
+            BreakdownFilter(breakdown_type=None, breakdown=None),
         )
         response = runner.to_actors_query_options()
 
diff --git a/posthog/hogql_queries/insights/trends/trends_query_runner.py b/posthog/hogql_queries/insights/trends/trends_query_runner.py
index 4717e0a3e4943..18374b0677ce4 100644
--- a/posthog/hogql_queries/insights/trends/trends_query_runner.py
+++ b/posthog/hogql_queries/insights/trends/trends_query_runner.py
@@ -215,7 +215,7 @@ def to_actors_query_options(self) -> InsightActorsQueryOptionsResponse:
             ]
 
         # Breakdowns
-        if self.query.breakdownFilter is not None:
+        if self.query.breakdownFilter is not None and self.query.breakdownFilter.breakdown is not None:
             res_breakdown = []
             if self.query.breakdownFilter.breakdown_type == "cohort":
                 assert isinstance(self.query.breakdownFilter.breakdown, list)