diff --git a/LICENSE b/LICENSE
index bd83d7e..56114d3 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2017 Bougarfaoui El houcine
+Copyright (c) 2017 Rodrigo Gonzalez
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/src/socket-io.service.ts b/src/socket-io.service.ts
index ac30dde..e7ed08a 100644
--- a/src/socket-io.service.ts
+++ b/src/socket-io.service.ts
@@ -34,7 +34,7 @@ export class WrappedSocket {
         return this.ioSocket.disconnect.apply(this.ioSocket, arguments);
     }
 
-    emit(eventName: string, data: any, callback?: Function) {
+    emit(eventName: string, data?: any, callback?: Function) {
         return this.ioSocket.emit.apply(this.ioSocket, arguments);
     }