diff --git a/app/ConfigureFormatDialog.cpp b/app/ConfigureFormatDialog.cpp
index 45a2984..5ddcce7 100644
--- a/app/ConfigureFormatDialog.cpp
+++ b/app/ConfigureFormatDialog.cpp
@@ -29,6 +29,7 @@
 #include <QHBoxLayout>
 #include <QLabel>
 #include <QSpinBox>
+#include <QString>
 #include <QWidget>
 
 #include "lib/PlaYUVerFrame.h"
@@ -266,7 +267,7 @@ ConfigureFormatDialog::ConfigureFormatDialog( QWidget *parent ) :
 
 }
 
-Int ConfigureFormatDialog::runConfigureFormatDialog( QString Filename, UInt& rWidth, UInt& rHeight, Int& rInputFormat, UInt& rBits, Int& rEndianess,
+Int ConfigureFormatDialog::runConfigureFormatDialog( const QString& Filename, UInt& rWidth, UInt& rHeight, Int& rInputFormat, UInt& rBits, Int& rEndianess,
     UInt& rFrameRate )
 {
   // Set default values
diff --git a/app/ConfigureFormatDialog.h b/app/ConfigureFormatDialog.h
index 3eefb8d..fc78f3b 100644
--- a/app/ConfigureFormatDialog.h
+++ b/app/ConfigureFormatDialog.h
@@ -27,7 +27,6 @@
 
 #include <QDialog>
 #include <QVector>
-#include <QString>
 
 #include "PlaYUVerAppDefs.h"
 
@@ -35,6 +34,7 @@ class QComboBox;
 class QHBoxLayout;
 class QLabel;
 class QSpinBox;
+class QString;
 class QWidget;
 
 /**
@@ -47,7 +47,7 @@ Q_OBJECT
 public:
 
   ConfigureFormatDialog( QWidget *parent = 0 );
-  Int runConfigureFormatDialog( QString Filename, UInt& rWidth, UInt& rHeight, Int& rInputFormat, UInt& rBits, Int& rEndianess, UInt& rFrameRate );
+  Int runConfigureFormatDialog( const QString& Filename, UInt& rWidth, UInt& rHeight, Int& rInputFormat, UInt& rBits, Int& rEndianess, UInt& rFrameRate );
 
 private Q_SLOTS:
   void slotStandardResolutionSelected( int );