diff --git a/src/core/qgsnetworkaccessmanager.cpp b/src/core/qgsnetworkaccessmanager.cpp
index e414a53c0d3..8756d934ab3 100644
--- a/src/core/qgsnetworkaccessmanager.cpp
+++ b/src/core/qgsnetworkaccessmanager.cpp
@@ -22,6 +22,7 @@
 #include <qgsnetworkaccessmanager.h>
 #include <qgsmessagelog.h>
 #include <qgslogger.h>
+#include <qgis.h>
 
 #include <QUrl>
 #include <QSettings>
@@ -136,7 +137,12 @@ QNetworkReply *QgsNetworkAccessManager::createRequest( QNetworkAccessManager::Op
   QSettings s;
 
   QNetworkRequest *pReq(( QNetworkRequest * ) &req ); // hack user agent
-  pReq->setRawHeader( "User-Agent", s.value( "/qgis/networkAndProxy/userAgent", "Mozilla/5.0" ).toByteArray() );
+
+  QString userAgent = s.value( "/qgis/networkAndProxy/userAgent", "Mozilla/5.0" ).toString();
+  if( !userAgent.isEmpty() )
+    userAgent += " ";
+  userAgent += QString( "QGIS/%1" ).arg( QGis::QGIS_VERSION );
+  pReq->setRawHeader( "User-Agent", userAgent.toUtf8() );
 
   emit requestAboutToBeCreated( op, req, outgoingData );
   QNetworkReply *reply = QNetworkAccessManager::createRequest( op, req, outgoingData );