diff --git a/kmfoldermaildir.cpp b/kmfoldermaildir.cpp
index c87a49b5c..d16523612 100644
--- a/kmfoldermaildir.cpp
+++ b/kmfoldermaildir.cpp
@@ -1125,13 +1125,13 @@ size_t KMFolderMaildir::doFolderSize() const
   list.append( KFileItem( S_IFDIR, -1, location() + "/tmp" ) );
 
   KIO::DirectorySizeJob* job = KIO::directorySize( list );
-  connect( job, SIGNAL( result( KIO::Job* ) ),
-           this, SLOT( slotDirSizeJobResult( KIO::Job*) ) );
+  connect( job, SIGNAL( result( KJob* ) ),
+           this, SLOT( slotDirSizeJobResult( KJob*) ) );
   mCurrentlyCheckingFolderSize = true;
   return -1;
 }
 
-void KMFolderMaildir::slotDirSizeJobResult( KIO::Job* job )
+void KMFolderMaildir::slotDirSizeJobResult( KJob* job )
 {
     mCurrentlyCheckingFolderSize = false;
     KIO::DirectorySizeJob * dirsize = dynamic_cast<KIO::DirectorySizeJob*>( job );
diff --git a/kmfoldermaildir.h b/kmfoldermaildir.h
index 5123ac48f..a3a6c8b62 100644
--- a/kmfoldermaildir.h
+++ b/kmfoldermaildir.h
@@ -5,16 +5,13 @@
 
 #include <QList>
 
-
+class KJob;
 class KMFolderMaildir;
 namespace KMail {
   class FolderJob;
   class MaildirJob;
   class AttachmentStrategy;
 }
-namespace KIO {
-    class Job;
-}
 
 using KMail::FolderJob;
 using KMail::MaildirJob;
@@ -143,7 +140,7 @@ protected:
   int addMsgInternal( KMMessage* msg, int* index_return = 0, bool stripUid=false );
 
 private slots:
-  void slotDirSizeJobResult( KIO::Job* job );
+  void slotDirSizeJobResult( KJob* job );
 
 private:
   void readFileHeaderIntern( const QString& dir, const QString& file,