diff --git a/firebase/firebase.d.ts b/firebase/firebase.d.ts
index 6302336e1..df792c713 100644
--- a/firebase/firebase.d.ts
+++ b/firebase/firebase.d.ts
@@ -65,23 +65,23 @@ interface FirebaseDataSnapshot {
 
 interface FirebaseOnDisconnect {
 	/**
-	 * Ensures the data at this location is set to the specified value when the client is disconnected 
+	 * Ensures the data at this location is set to the specified value when the client is disconnected
 	 * (due to closing the browser, navigating to a new page, or network issues).
 	 */
 	set(value: any, onComplete?: (error: any) => void): void;
 	/**
-	 * Ensures the data at this location is set to the specified value and priority when the client is disconnected 
+	 * Ensures the data at this location is set to the specified value and priority when the client is disconnected
 	 * (due to closing the browser, navigating to a new page, or network issues).
 	 */
 	setWithPriority(value: any, priority: string, onComplete?: (error: any) => void): void;
 	setWithPriority(value: any, priority: number, onComplete?: (error: any) => void): void;
 	/**
-	 * Writes the enumerated children at this Firebase location when the client is disconnected 
+	 * Writes the enumerated children at this Firebase location when the client is disconnected
 	 * (due to closing the browser, navigating to a new page, or network issues).
 	 */
 	update(value: Object, onComplete?: (error: any) => void): void;
 	/**
-	 * Ensures the data at this location is deleted when the client is disconnected 
+	 * Ensures the data at this location is deleted when the client is disconnected
 	 * (due to closing the browser, navigating to a new page, or network issues).
 	 */
 	remove(onComplete?: (error: any) => void): void;
@@ -127,13 +127,13 @@ interface FirebaseQuery {
 	 */
 	limit(limit: number): FirebaseQuery;
 	/**
-	 * Creates a Query with the specified starting point. 
+	 * Creates a Query with the specified starting point.
 	 * The generated Query includes children which match the specified starting point.
 	 */
 	startAt(value: string, key?: string): FirebaseQuery;
 	startAt(value: number, key?: string): FirebaseQuery;
 	/**
-	 * Creates a Query with the specified ending point. 
+	 * Creates a Query with the specified ending point.
 	 * The generated Query includes children which match the specified ending point.
 	 */
 	endAt(value: string, key?: string): FirebaseQuery;
@@ -263,7 +263,7 @@ interface Firebase extends FirebaseQuery {
 	/**
 	 * Creates a new user account using an email / password combination.
 	 */
-	createUser(credentials: FirebaseCredentials, onComplete: (error: any) => void): void;
+	createUser(credentials: FirebaseCredentials, onComplete: (error: any, userData: any) => void): void;
 	/**
 	 * Updates the email associated with an email / password user account.
 	 */
@@ -298,7 +298,7 @@ interface FirebaseStatic {
 
 	ServerValue: {
 		/**
-		 * A placeholder value for auto-populating the current timestamp 
+		 * A placeholder value for auto-populating the current timestamp
 		 * (time since the Unix epoch, in milliseconds) by the Firebase servers.
 		 */
 		TIMESTAMP: any;