diff --git a/posthog/hogql_queries/insights/trends/trends_query_runner.py b/posthog/hogql_queries/insights/trends/trends_query_runner.py
index b9acb5c37d000..29d29b55e8b0f 100644
--- a/posthog/hogql_queries/insights/trends/trends_query_runner.py
+++ b/posthog/hogql_queries/insights/trends/trends_query_runner.py
@@ -709,7 +709,7 @@ def _is_breakdown_field_boolean(self):
             if not table_model:
                 raise ValueError(f"Table {series.table_name} not found")
 
-            field_type = dict(table_model.columns)[self.query.breakdownFilter.breakdown]
+            field_type = dict(table_model.columns)[self.query.breakdownFilter.breakdown]["clickhouse"]
 
             if field_type.startswith("Nullable("):
                 field_type = field_type.replace("Nullable(", "")[:-1]