1 files changed, 3 insertions, 3 deletions
diff --git a/spec/ruby/library/matrix/shared/collect.rb b/spec/ruby/library/matrix/shared/collect.rb
index 852f7fd6cf..3a4dbe3a36 100644
--- a/spec/ruby/library/matrix/shared/collect.rb
+++ b/spec/ruby/library/matrix/shared/collect.rb
@@ -7,7 +7,7 @@ describe :collect, shared: true do
   end
 
   it "returns an instance of Matrix" do
-    @m.send(@method){|n| n * 2 }.should be_kind_of(Matrix)
+    @m.send(@method){|n| n * 2 }.should.is_a?(Matrix)
   end
 
   it "returns a Matrix where each element is the result of the block" do
@@ -15,12 +15,12 @@ describe :collect, shared: true do
   end
 
   it "returns an enumerator if no block is given" do
-    @m.send(@method).should be_an_instance_of(Enumerator)
+    @m.send(@method).should.instance_of?(Enumerator)
   end
 
   describe "for a subclass of Matrix" do
     it "returns an instance of that subclass" do
-      MatrixSub.ins.send(@method){1}.should be_an_instance_of(MatrixSub)
+      MatrixSub.ins.send(@method){1}.should.instance_of?(MatrixSub)
     end
   end
 end