diff --git a/init/service.cpp b/init/service.cpp
index 5c2a0cb..a370d25 100644
--- a/init/service.cpp
+++ b/init/service.cpp
@@ -20,6 +20,7 @@
 #include <sys/stat.h>
 #include <sys/types.h>
 #include <termios.h>
+#include <unistd.h>
 
 #include <selinux/selinux.h>