diff --git a/Rakefile b/Rakefile
index d461308..48f9e8a 100644
--- a/Rakefile
+++ b/Rakefile
@@ -5,7 +5,7 @@ task default: :test
 Rake::TestTask.new do |t|
   t.libs << "test"
   t.pattern = "test/**/*_test.rb"
-  t.warning = false
+  t.warning = false # for elasticsearch and tests
 end
 
 # to test in parallel, uncomment and run:
diff --git a/test/scroll_test.rb b/test/scroll_test.rb
index 8c3ff77..c16d9aa 100644
--- a/test/scroll_test.rb
+++ b/test/scroll_test.rb
@@ -59,7 +59,7 @@ class ScrollTest < Minitest::Test
     error = assert_raises Searchkick::Error do
       products.scroll
     end
-    assert_match /Pass .+ option/, error.message
+    assert_match(/Pass .+ option/, error.message)
   end
 
   def test_block
--
libgit2 0.21.0