     let d1 = Deferred(value: value)
     XCTAssert(d1.peek() == value)
 
-    let d2 = delay(µs: 100).map { value }
+    let d2 = Deferred(value: value).delay(µs: 100)
     XCTAssert(d2.peek() == nil)
 
     let expectation = expectationWithDescription("Waiting on Deferred")

    let v2 = UInt64(arc4random())
    let v3 = arc4random().description

    let d1 = delay(ms: 100).map { v1 }
    let d2 = delay(ms: 200).map { v2 }
    let d3 = Deferred { v3 }

    let c = d1.combine(d2,d3).value
    XCTAssert(c.0 == v1)

    let v1 = Int(arc4random())
    let v2 = UInt64(arc4random())

    let d1 = Deferred(value: v1).delay(ms: 100)
    let d2 = Deferred(value: v2).delay(ms: 200)

    let c = d1.combine(d2).value
    XCTAssert(c.0 == v1)
