diff --git a/lib/torque/postgresql/associations/preloader/loader_query.rb b/lib/torque/postgresql/associations/preloader/loader_query.rb
index 1595a77..371d45f 100644
--- a/lib/torque/postgresql/associations/preloader/loader_query.rb
+++ b/lib/torque/postgresql/associations/preloader/loader_query.rb
@@ -24,7 +24,7 @@ def query_condition_for(keys)
           end
 
           def connected_through_array?
-            !association_key_name.is_a?(Array) && foreign_column.array?
+            !association_key_name.is_a?(Array) && foreign_column&.array?
           end
         end