         case .Custom(let rawQueue):
             dispatch_resume(rawQueue)
         default:
-            assertionFailure("You can only suspend custom queues, not system queues!")
+            exceptionFailure("You can only suspend custom queues, not system queues!")
         }
     }
     

//

import Foundation

public struct Dispatch {
    

        case .Custom(let rawQueue):
            dispatch_suspend(rawQueue)
        default:
            exceptionFailure("You can only suspend custom queues, not system queues!")
        }
    }
    
