diff --git a/src/mimemessage.cpp b/src/mimemessage.cpp
index 442faf8..2460abf 100644
--- a/src/mimemessage.cpp
+++ b/src/mimemessage.cpp
@@ -294,9 +294,9 @@ QString MimeMessage::toString()
         mime += "References: <" + mInReplyTo + ">\r\n";
     }
 
-#if QT_MAJOR_VERSION < 5 //Qt4 workaround since RFC2822Date isn't defined
+#if QT_VERSION_MAJOR < 5 //Qt4 workaround since RFC2822Date isn't defined
     mime += QString("Date: %1\r\n").arg(QDateTime::currentDateTime().toString("dd MMM yyyy hh:mm:ss +/-TZ"));
-#elif //Qt5 supported
+#else //Qt5 supported
     mime += QString("Date: %1\r\n").arg(QDateTime::currentDateTime().toString(Qt::RFC2822Date));
 #endif //support RFC2822Date