diff --git a/smb4k/configdlg/smb4kshareoptions.cpp b/smb4k/configdlg/smb4kshareoptions.cpp
index 24e309a..6627b51 100644
--- a/smb4k/configdlg/smb4kshareoptions.cpp
+++ b/smb4k/configdlg/smb4kshareoptions.cpp
@@ -40,6 +40,7 @@
 // system includes
 #include <sys/types.h>
 #include <pwd.h>
+#include <unistd.h>
 
 // applications specific includes
 #include "smb4kshareoptions.h"