diff --git a/vmime/net/smtp/SMTPResponse.hpp b/vmime/net/smtp/SMTPResponse.hpp
index 49681e50..73eb927f 100644
--- a/vmime/net/smtp/SMTPResponse.hpp
+++ b/vmime/net/smtp/SMTPResponse.hpp
@@ -44,7 +44,7 @@ namespace smtp {
   */
 class SMTPResponse : public object
 {
-	friend class creator;
+	friend class vmime::creator;
 
 public: