diff --git a/src/shared/symbianutils/virtualserialdevice_posix.cpp b/src/shared/symbianutils/virtualserialdevice_posix.cpp
index 3df6ca33e9f17d5d796e0eb46ea704c52549e9cc..1dd49850e41a50a7135c5b026431dea34b72e86d 100644
--- a/src/shared/symbianutils/virtualserialdevice_posix.cpp
+++ b/src/shared/symbianutils/virtualserialdevice_posix.cpp
@@ -3,6 +3,7 @@
 #include <errno.h>
 #include <termios.h>
 #include <sys/ioctl.h>
+#include <unistd.h>
 #include <QtCore/QSocketNotifier>
 #include <QtCore/QTimer>
 #include <QtCore/QThread>