diff --git a/test/ecto/adapters/myxql_test.exs b/test/ecto/adapters/myxql_test.exs
index 76093a8b..024f231e 100644
--- a/test/ecto/adapters/myxql_test.exs
+++ b/test/ecto/adapters/myxql_test.exs
@@ -625,7 +625,7 @@ defmodule Ecto.Adapters.MyXQLTest do
     query = Schema |> select([r], r.x + 2) |> plan()
     assert all(query) == ~s{SELECT s0.`x` + 2 FROM `schema` AS s0}
 
-    query = Schema |> select([r], (not r.x) < r.y) |> plan()
+    query = Schema |> select([r], not r.x < r.y) |> plan()
     assert all(query) == ~s{SELECT (NOT (s0.`x`)) < s0.`y` FROM `schema` AS s0}
   end
 
diff --git a/test/ecto/adapters/postgres_test.exs b/test/ecto/adapters/postgres_test.exs
index 25788087..b7be9339 100644
--- a/test/ecto/adapters/postgres_test.exs
+++ b/test/ecto/adapters/postgres_test.exs
@@ -156,7 +156,7 @@ defmodule Ecto.Adapters.PostgresTest do
                    all(from(f in fragment("select ? as x", ^"abc"), select: f) |> plan())
                  end
   end
-  
+
   test "fragment columns" do
     query = from(f in fragment("select_rows(arg)", columns: [:x]), select: f.x) |> plan()
     assert all(query) == ~s{SELECT f0."x" FROM select_rows(arg) AS f0 ("x")}
@@ -818,7 +818,7 @@ defmodule Ecto.Adapters.PostgresTest do
     query = Schema |> select([r], r.x + 2) |> plan()
     assert all(query) == ~s{SELECT s0."x" + 2 FROM "schema" AS s0}
 
-    query = Schema |> select([r], (not r.x) < r.y) |> plan()
+    query = Schema |> select([r], not r.x < r.y) |> plan()
     assert all(query) == ~s{SELECT (NOT (s0."x")) < s0."y" FROM "schema" AS s0}
   end
 
diff --git a/test/ecto/adapters/tds_test.exs b/test/ecto/adapters/tds_test.exs
index 7a58e385..e1c55928 100644
--- a/test/ecto/adapters/tds_test.exs
+++ b/test/ecto/adapters/tds_test.exs
@@ -680,7 +680,7 @@ defmodule Ecto.Adapters.TdsTest do
     query = Schema |> select([r], r.x > 2) |> plan()
     assert all(query) == ~s{SELECT s0.[x] > 2 FROM [schema] AS s0}
 
-    query = Schema |> select([r], (not r.x) < r.y) |> plan()
+    query = Schema |> select([r], not r.x < r.y) |> plan()
     assert all(query) == ~s{SELECT (NOT (s0.[x])) < s0.[y] FROM [schema] AS s0}
   end