diff --git a/sflphone-client-kde/src/AccountWizard.cpp b/sflphone-client-kde/src/AccountWizard.cpp
index 83afe4bdadbe73ddfe748e15b8170aff4799ef82..b3a88891674dbae27468602d73aa4feccffd33b3 100644
--- a/sflphone-client-kde/src/AccountWizard.cpp
+++ b/sflphone-client-kde/src/AccountWizard.cpp
@@ -18,6 +18,7 @@
  *   Free Software Foundation, Inc.,                                       *
  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  ***************************************************************************/
+#include <unistd.h>
 #include "AccountWizard.h"
 #include <QVBoxLayout>
 #include <QFormLayout>
diff --git a/sflphone-client-kde/src/SFLPhone.cpp b/sflphone-client-kde/src/SFLPhone.cpp
index 8c7d73c31edf42351058d1c0dcc7977fa12dc9c8..783ac4d33319fe3d1ef4840d3b1e906dee5daa19 100644
--- a/sflphone-client-kde/src/SFLPhone.cpp
+++ b/sflphone-client-kde/src/SFLPhone.cpp
@@ -21,6 +21,7 @@
  
 #include "SFLPhone.h"
 
+#include <unistd.h>
 #include <KApplication>
 #include <KStandardAction>
 #include <KMenuBar>
diff --git a/sflphone-client-kde/src/main.cpp b/sflphone-client-kde/src/main.cpp
index 488ee1db9111b1447f0c355e4dc2fa5f7c7ec204..988c3a87a4d0c821a0bb7421e8b5ddeaeb27a168 100644
--- a/sflphone-client-kde/src/main.cpp
+++ b/sflphone-client-kde/src/main.cpp
@@ -1,3 +1,5 @@
+#include <unistd.h>
+
 #include <QApplication>
 #include <QtCore/QString>
 #include <QtGui/QMenu>