Index: usbguard-usbguard-0.6.2/src/Library/IPCServerPrivate.cpp
===================================================================
--- usbguard-usbguard-0.6.2.orig/src/Library/IPCServerPrivate.cpp
+++ usbguard-usbguard-0.6.2/src/Library/IPCServerPrivate.cpp
@@ -24,6 +24,7 @@
 #include <sys/poll.h>
 #include <sys/eventfd.h>
 #include <sys/types.h>
+#include <unistd.h>
 #include <pwd.h>
 #include <grp.h>
 
Index: usbguard-usbguard-0.6.2/src/Library/IPCClientPrivate.cpp
===================================================================
--- usbguard-usbguard-0.6.2.orig/src/Library/IPCClientPrivate.cpp
+++ usbguard-usbguard-0.6.2/src/Library/IPCClientPrivate.cpp
@@ -20,6 +20,7 @@
 #include "IPCPrivate.hpp"
 #include "Logger.hpp"
 
+#include <unistd.h>
 #include <sys/poll.h>
 #include <sys/eventfd.h>