diff --git a/README.md b/README.md
index af043d8..5320831 100644
--- a/README.md
+++ b/README.md
@@ -11,7 +11,7 @@ socket.on("connect") {data, ack in
 
 socket.on("currentAmount") {data, ack in
     if let cur = data?[0] as? Double {
-        socket.emitWithAck("canUpdate", cur)(timeout: 0) {data in
+        socket.emitWithAck("canUpdate", cur)(timeoutAfter: 0) {data in
             socket.emit("update", ["amount": cur + 2.50])
         }
 
@@ -129,7 +129,7 @@ Methods
 2. `onAny(callback:((event:String, items:AnyObject?)) -> Void)` - Adds a handler for all events. It will be called on any received event.
 3. `emit(event:String, _ items:AnyObject...)` - Sends a message. Can send multiple items.
 4. `emit(event:String, withItems items:[AnyObject])` - `emit` for Objective-C
-5. `emitWithAck(event:String, _ items:AnyObject...) -> (timeout:UInt64, callback:(NSArray?) -> Void) -> Void` - Sends a message that requests an acknowledgement from the server. Returns a function which you can use to add a handler. See example. Note: The message is not sent until you call the returned function.
+5. `emitWithAck(event:String, _ items:AnyObject...) -> (timeoutAfter:UInt64, callback:(NSArray?) -> Void) -> Void` - Sends a message that requests an acknowledgement from the server. Returns a function which you can use to add a handler. See example. Note: The message is not sent until you call the returned function.
 6. `emitWithAck(event:String, withItems items:[AnyObject]) -> (UInt64, (NSArray?) -> Void) -> Void` - `emitWithAck` for Objective-C. Note: The message is not sent until you call the returned function.
 7. `connect()` - Establishes a connection to the server. A "connect" event is fired upon successful connection.
 8. `connect(#timeoutAfter:Int, withTimeoutHandler handler:(() -> Void)?)` - Connect to the server. If it isn't connected after timeoutAfter seconds, the handler is called.
diff --git a/SocketIOClientSwift/SocketTypes.swift b/SocketIOClientSwift/SocketTypes.swift
index 596a267..e5198f9 100644
--- a/SocketIOClientSwift/SocketTypes.swift
+++ b/SocketIOClientSwift/SocketTypes.swift
@@ -27,4 +27,4 @@ import Foundation
 public typealias AckCallback = (NSArray?) -> Void
 public typealias AckEmitter = (AnyObject...) -> Void
 public typealias NormalCallback = (NSArray?, AckEmitter?) -> Void
-public typealias OnAckCallback = (timeout:UInt64, callback:AckCallback) -> Void
+public typealias OnAckCallback = (timeoutAfter:UInt64, callback:AckCallback) -> Void