diff --git a/src/mainwindow.cpp b/src/mainwindow.cpp
index 465cc22..0f6ccd3 100644
--- a/src/mainwindow.cpp
+++ b/src/mainwindow.cpp
@@ -53,6 +53,7 @@
 #include "core/drophandler.h"
 #include "latin1literal.h"
 
+#include <unistd.h>
 #include <kapplication.h>
 #include <kcombobox.h>
 #include <kiconloader.h>