使用组件中的模型的Angular 2错误

ERROR in [default] /home/szabo/PhpstormProjects/recipe-book/src/app/recipes/recipe-list/recipe-item.component.ts:11:2
Unable to resolve signature of property decorator when called as an expression.
Supplied parameters do not match any signature of call target.

这是我的“模特”：

recipe.ts

export class Recipe {
    constructor(public name,public description,public imagePath) {

    }
}

这是我的RecipeItemComponent：

import {Component,OnInit,Input} from '@angular/core';

import { Recipe } from '../recipe';

@Component({
    selector: 'app-recipe-item',templateUrl: './recipe-item.component.html',styleUrls: ['./recipe-item.component.css']
})
export class RecipeItemComponent implements OnInit {
  @Input recipe: Recipe; //line 11
  recipeId: number;

  constructor() { }

  ngOnInit() {
  }

}

可能是什么问题呢？
谢谢.