diff --git a/Client/XmppClient.cs b/Client/XmppClient.cs
index b2f5ec23..2b252069 100644
--- a/Client/XmppClient.cs
+++ b/Client/XmppClient.cs
@@ -774,7 +774,7 @@ public void Connect(string resource = null)
         /// of an XMPP extension failed.</exception>
         public void Authenticate(string username, string password)
         {
-            im.Autenticate(username, password);
+            im.Authenticate(username, password);
         }
 
         /// <summary>
diff --git a/Im/XmppIm.cs b/Im/XmppIm.cs
index 388226b1..ca01c3c4 100644
--- a/Im/XmppIm.cs
+++ b/Im/XmppIm.cs
@@ -402,7 +402,7 @@ public Roster Connect(string resource = null)
         /// <exception cref="XmppException">An XMPP error occurred while negotiating the
         /// XML stream with the server, or resource binding failed, or the initialization
         /// of an XMPP extension failed.</exception>
-        public void Autenticate(string username, string password)
+        public void Authenticate(string username, string password)
         {
             username.ThrowIfNull("username");
             password.ThrowIfNull("password");
@@ -415,6 +415,12 @@ public void Autenticate(string username, string password)
             SendPresence(new Presence());
         }
 
+        [Obsolete("Use the appropriately-spelled 'Authenticate(string, string)' method instead.")]
+        public void Autenticate(string username, string password)
+        {
+            Authenticate(username, password);
+        }
+
         /// <summary>
         /// Sends a chat message with the specified content to the specified JID.
         /// </summary>