Index: src/providers/ogr/qgsogrprovider.cpp
===================================================================
--- src/providers/ogr/qgsogrprovider.cpp	(Revision 12258)
+++ src/providers/ogr/qgsogrprovider.cpp	(Arbeitskopie)
@@ -1519,7 +1519,27 @@
   {
     return false;
   }
-
+  
+  //Ogr provides prj-files without the towgs84 parameter. So we just overwrite the prj file with a correct one 
+  //just like we do in qgsvectorfilewriter 
+  if(format == "ESRI Shapefile"){
+    QRegExp regExp( ".shp$" );
+    QString prjName = uri;
+    prjName.replace( regExp, QString( "" ) );
+    prjName.append( QString( ".prj" ) );
+    QFile prjFile( prjName );
+  
+    if ( !prjFile.open( QIODevice::WriteOnly ) )
+    {
+      QgsDebugMsg( "Couldn't open file " + prjName );
+    }
+    else{
+      QTextStream prjStream( & prjFile );
+      prjStream << mySpatialRefSys.toWkt() << endl;
+      prjFile.close();
+    }
+  }
+  
   //create the attribute fields
 
   QTextCodec* codec = QTextCodec::codecForName( encoding.toLocal8Bit().data() );