1 files changed, 3 insertions, 3 deletions
diff --git a/spec/ruby/core/symbol/casecmp_spec.rb b/spec/ruby/core/symbol/casecmp_spec.rb
index 662a29a284..dcb77a8350 100644
--- a/spec/ruby/core/symbol/casecmp_spec.rb
+++ b/spec/ruby/core/symbol/casecmp_spec.rb
@@ -64,16 +64,16 @@ end
 
 describe "Symbol#casecmp" do
   it "returns nil if other is a String" do
-    :abc.casecmp("abc").should be_nil
+    :abc.casecmp("abc").should == nil
   end
 
   it "returns nil if other is an Integer" do
-    :abc.casecmp(1).should be_nil
+    :abc.casecmp(1).should == nil
   end
 
   it "returns nil if other is an object" do
     obj = mock("string <=>")
-    :abc.casecmp(obj).should be_nil
+    :abc.casecmp(obj).should == nil
   end
 end