diff --git a/src/servers/registrar/ShutdownProcess.cpp b/src/servers/registrar/ShutdownProcess.cpp
index b77938b267..512a3895dc 100644
--- a/src/servers/registrar/ShutdownProcess.cpp
+++ b/src/servers/registrar/ShutdownProcess.cpp
@@ -22,6 +22,8 @@
 
 #include <TokenSpace.h>
 #include <util/DoublyLinkedList.h>
+
+#include <syscalls.h>
 
 #include "AppInfoListMessagingTargetSet.h"
 #include "Debug.h"