1 files changed, 1 insertions, 1 deletions
diff --git a/spec/ruby/core/thread/name_spec.rb b/spec/ruby/core/thread/name_spec.rb
index adb2d08fae..9b3d2f4b09 100644
--- a/spec/ruby/core/thread/name_spec.rb
+++ b/spec/ruby/core/thread/name_spec.rb
@@ -34,7 +34,7 @@ describe "Thread#name=" do
   end
 
   it "raises an ArgumentError if the name includes a null byte" do
-    lambda {
+    -> {
       @thread.name = "new thread\0name"
     }.should raise_error(ArgumentError)
   end