--- src/svnfrontend/maintreewidget.cpp
+++ src/svnfrontend/maintreewidget.cpp
@@ -55,6 +55,7 @@
 #include <kio/copyjob.h>
 #include <kfiledialog.h>
 #include <knotification.h>
+#include <unistd.h>
 
 #include <QSortFilterProxyModel>
 #include <QEvent>