1 files changed, 2 insertions, 2 deletions
diff --git a/spec/ruby/core/argf/read_nonblock_spec.rb b/spec/ruby/core/argf/read_nonblock_spec.rb
index 466264119f..5c6bd52d80 100644
--- a/spec/ruby/core/argf/read_nonblock_spec.rb
+++ b/spec/ruby/core/argf/read_nonblock_spec.rb
@@ -64,9 +64,9 @@ platform_is_not :windows do
 
       it 'raises IO::EAGAINWaitReadable when empty' do
         argf ['-'] do
-          lambda {
+          -> {
             @argf.read_nonblock(4)
-          }.should raise_error(IO::EAGAINWaitReadable)
+          }.should.raise(IO::EAGAINWaitReadable)
         end
       end