diff --git a/NetSSL_Win/include/Poco/Net/SecureSMTPClientSession.h b/NetSSL_Win/include/Poco/Net/SecureSMTPClientSession.h
index 4db353f40..78441e10c 100644
--- a/NetSSL_Win/include/Poco/Net/SecureSMTPClientSession.h
+++ b/NetSSL_Win/include/Poco/Net/SecureSMTPClientSession.h
@@ -29,7 +29,7 @@ namespace Net {
 
 class NetSSL_Win_API SecureSMTPClientSession: public SMTPClientSession
 	/// This class implements an Simple Mail
-	/// Transfer Procotol (SMTP, RFC 2821)
+	/// Transfer Protocol (SMTP, RFC 2821)
 	/// client for sending e-mail messages that
 	/// supports the STARTTLS command for secure
 	/// connections.