diff --git a/servatrice/src/smtp/qxtglobal.h b/servatrice/src/smtp/qxtglobal.h
index a5744d88..51d374a7 100644
--- a/servatrice/src/smtp/qxtglobal.h
+++ b/servatrice/src/smtp/qxtglobal.h
@@ -30,6 +30,7 @@
 
 #define QXT_VERSION 0x000602
 #define QXT_VERSION_STR "0.6.2"
+#define QXT_STATIC
 
 //--------------------------global macros------------------------------
 
diff --git a/servatrice/src/smtp/qxtmailattachment.h b/servatrice/src/smtp/qxtmailattachment.h
index 8084bbec..23955ff9 100644
--- a/servatrice/src/smtp/qxtmailattachment.h
+++ b/servatrice/src/smtp/qxtmailattachment.h
@@ -34,7 +34,7 @@
 #include <QSharedDataPointer>
 #include <QIODevice>
 
-class QxtMailAttachmentPrivate;
+struct QxtMailAttachmentPrivate;
 class QXT_NETWORK_EXPORT QxtMailAttachment
 {
 public: