CoffeeScript compiling: Unexpected IF

I am writing some CoffeeScript code for an API, and in the error catching section of my code I placed an IF statement. Now, during the compilation process CoffeeScript is saying that the IF statement was unexpected. ``` # Handle Errors app.error (err, req, res, next) -> if err instanceof NotFound res.send '404, not found.' else res.send '500, internal server error.' app.get '/*', (req, res) -> throw new NotFound NotFound = (msg) -> this.name = 'NotFound' Error.call this, msg Error.captureStackTrace this, arguments.callee ``` The error is ``` /home/techno/node/snaprss/application.coffee:22:5: error: unexpected if if err instanceOf NotFound ^^ ``` Does anyone have any ideas where the issue is within my code?