False-Positive prop-types Error?

[epmatsw]

The following code:

      Copyable.prototype.render = function() {
        return React.createElement(ReactZeroClipboard, {
          "text": this.props.textToCopy
        });
      };

gives the following warning:

error  'props' is missing in props validation        react/prop-types

My propTypes are set up correctly (as far as I know), and even if they weren't, it's weird that it complains about props:

Copyable.propTypes = {
        buttonText: React.PropTypes.string.isRequired,
        textToCopy: React.PropTypes.string.isRequired,
        copyClassName: React.PropTypes.string,
        htmlToCopy: React.PropTypes.string
      };