lib/bindata/choice.rb in bindata-0.11.0 vs lib/bindata/choice.rb in bindata-0.11.1

@@ -90,10 +90,10 @@
 
       def ensure_valid_keys(choices)
         if choices.has_key?(nil)
           raise ArgumentError, ":choices hash may not have nil key"
         end
-        if choices.keys.detect { |key| Symbol === key }
+        if choices.keys.detect { |key| key.is_a?(Symbol) }
           raise ArgumentError, ":choices hash may not have symbols for keys"
         end
       end
     end