1 files changed, 1 insertions, 1 deletions
diff --git a/spec/ruby/library/net/http/httpheader/initialize_http_header_spec.rb b/spec/ruby/library/net/http/httpheader/initialize_http_header_spec.rb
index 35768b4e7e..efc5e7d0b2 100644
--- a/spec/ruby/library/net/http/httpheader/initialize_http_header_spec.rb
+++ b/spec/ruby/library/net/http/httpheader/initialize_http_header_spec.rb
@@ -14,7 +14,7 @@ describe "Net::HTTPHeader#initialize_http_header when passed Hash" do
   end
 
   it "complains about duplicate keys when in verbose mode" do
-    lambda do
+    -> do
       @headers.initialize_http_header("My-Header" => "test", "my-header" => "another test")
     end.should complain(/duplicated HTTP header/, verbose: true)
   end