diff --git a/Source/SocketIOClient.swift b/Source/SocketIOClient.swift
index 6a30ad0..4f56613 100644
--- a/Source/SocketIOClient.swift
+++ b/Source/SocketIOClient.swift
@@ -65,7 +65,7 @@ public final class SocketIOClient : NSObject, SocketEngineClient, SocketParsable
     var waitingPackets = [SocketPacket]()
     
     public var sid: String? {
-        return nsp + "#" + (engine?.sid ?? "")
+        return engine?.sid
     }
     
     /// Type safe way to create a new SocketIOClient. opts can be omitted