lib/stump/mock.rb in motion-stump-0.3.0 vs lib/stump/mock.rb in motion-stump-0.3.1

@@ -21,10 +21,10 @@
                     raise ArgumentError if block.arity >= 0 && args.length != block.arity
 
                     Stump::Mocks.verify([self, method])
                     block.call(*args)
                   end
-                elsif options[:yield]
+                elsif !options[:yield].nil?
                   lambda do |*args|
                     Stump::Mocks.verify([self, method])
                     yield(options[:yield])
                   end
                 else