1 files changed, 3 insertions, 3 deletions
diff --git a/spec/ruby/library/complex/math/shared/acos.rb b/spec/ruby/library/complex/math/shared/acos.rb
index 61be31571f..65637fa838 100644
--- a/spec/ruby/library/complex/math/shared/acos.rb
+++ b/spec/ruby/library/complex/math/shared/acos.rb
@@ -28,14 +28,14 @@ describe :complex_math_acos_bang, shared: true do
   end
 
   it "raises a TypeError when passed a Complex number" do
-    lambda { @object.send(:acos!, Complex(4, 5)) }.should raise_error(TypeError)
+    -> { @object.send(:acos!, Complex(4, 5)) }.should raise_error(TypeError)
   end
 
   it "raises an Errno::EDOM for numbers greater than 1.0" do
-    lambda { @object.send(:acos!, 1.0001) }.should raise_error(Errno::EDOM)
+    -> { @object.send(:acos!, 1.0001) }.should raise_error(Errno::EDOM)
   end
 
   it "raises an Errno::EDOM for numbers less than -1.0" do
-    lambda { @object.send(:acos!, -1.0001) }.should raise_error(Errno::EDOM)
+    -> { @object.send(:acos!, -1.0001) }.should raise_error(Errno::EDOM)
   end
 end