diff --git a/.rubocop.yml b/.rubocop.yml
index 9a14d206e..84d6a7c5b 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -4,6 +4,7 @@ AllCops:
   Exclude:
     - doc/**/*.rb
     - rake.gemspec
+    - bin/*
 
 Metrics/LineLength:
   Enabled: true
diff --git a/test/helper.rb b/test/helper.rb
index 7d0989a38..8e061fa45 100644
--- a/test/helper.rb
+++ b/test/helper.rb
@@ -2,7 +2,7 @@
 $:.unshift File.expand_path("../../lib", __FILE__)
 
 begin
-  if ENV['COVERALLS']
+  if ENV["COVERALLS"]
     gem "coveralls"
     require "coveralls"
     Coveralls.wear!
diff --git a/test/test_rake_task.rb b/test/test_rake_task.rb
index ee3e9d35c..688e0a3e7 100644
--- a/test/test_rake_task.rb
+++ b/test/test_rake_task.rb
@@ -172,7 +172,8 @@ def test_find
     task :tfind
     assert_equal "tfind", Task[:tfind].name
     ex = assert_raises(RuntimeError) { Task[:leaves] }
-    assert_equal "Don't know how to build task 'leaves' (See the list of available tasks with `rake --tasks`)", ex.message
+    assert_equal "Don't know how to build task 'leaves'" \
+      " (See the list of available tasks with `rake --tasks`)", ex.message
   end
 
   def test_defined