diff --git a/python/target_selection/cartons/mwm_more_ob.py b/python/target_selection/cartons/mwm_more_ob.py
index 263d3696..a7c2d76e 100644
--- a/python/target_selection/cartons/mwm_more_ob.py
+++ b/python/target_selection/cartons/mwm_more_ob.py
@@ -145,4 +145,7 @@ def build_query(self, version_id, query_region=None):
                 )
             )
 
+        self.database.execute_sql("SET LOCAL enable_bitmapscan = false;")
+        self.database.execute_sql("SET LOCAL enable_seqscan = false;")
+
         return query