1 files changed, 13 insertions, 15 deletions

diff --git a/spec/ruby/core/array/difference_spec.rb b/spec/ruby/core/array/difference_spec.rb
index a357657967..63e32feca0 100644
--- a/spec/ruby/core/array/difference_spec.rb
+++ b/spec/ruby/core/array/difference_spec.rb
@@ -2,23 +2,21 @@ require_relative '../../spec_helper'
 require_relative 'fixtures/classes'
 require_relative 'shared/difference'
 
-ruby_version_is "2.6" do
-  describe "Array#difference" do
-    it_behaves_like :array_binary_difference, :difference
+describe "Array#difference" do
+  it_behaves_like :array_binary_difference, :difference
 
-    it "returns a copy when called without any parameter" do
-      x = [1, 2, 3, 2]
-      x.difference.should == x
-      x.difference.should_not equal x
-    end
+  it "returns a copy when called without any parameter" do
+    x = [1, 2, 3, 2]
+    x.difference.should == x
+    x.difference.should_not.equal? x
+  end
 
-    it "does not return subclass instances for Array subclasses" do
-      ArraySpecs::MyArray[1, 2, 3].difference.should be_an_instance_of(Array)
-    end
+  it "does not return subclass instances for Array subclasses" do
+    ArraySpecs::MyArray[1, 2, 3].difference.should.instance_of?(Array)
+  end
 
-    it "accepts multiple arguments" do
-      x = [1, 2, 3, 1]
-      x.difference([], [0, 1], [3, 4], [3]).should == [2]
-    end
+  it "accepts multiple arguments" do
+    x = [1, 2, 3, 1]
+    x.difference([], [0, 1], [3, 4], [3]).should == [2]
   end
 end