diff --git a/lib/aggregate.ex b/lib/aggregate.ex
index f9f9c35..6373044 100644
--- a/lib/aggregate.ex
+++ b/lib/aggregate.ex
@@ -791,7 +791,7 @@ defmodule AshPostgres.Aggregate do
         """
 
       rel ->
-        to_many_path?(rel.destination, [rest])
+        to_many_path?(rel.destination, rest)
     end
   end
 
diff --git a/test/aggregate_test.exs b/test/aggregate_test.exs
index 7494511..326945b 100644
--- a/test/aggregate_test.exs
+++ b/test/aggregate_test.exs
@@ -1167,12 +1167,8 @@ defmodule AshPostgres.AggregateTest do
     test "a count can filter independently of the query" do
       Post
       |> Api.aggregate([
-        Ash.Query.Aggregate.new!(Post, :count, :count,
-          query: [filter: Ash.Expr.expr(comments.likes > 10)]
-        ),
-        Ash.Query.Aggregate.new!(Post, :count2, :count,
-          query: [filter: Ash.Expr.expr(comments.likes < 10)]
-        )
+        {:count, :count, query: [filter: Ash.Expr.expr(comments.likes > 10)]},
+        {:count2, :count, query: [filter: Ash.Expr.expr(comments.likes < 10)]}
       ])
     end