diff --git a/test/test-service.c b/test/test-service.c
index 57ece0fa..ee0086ca 100644
--- a/test/test-service.c
+++ b/test/test-service.c
@@ -1,5 +1,6 @@
 
 #include "test-utils.h"
+#include <unistd.h>
 
 static DBusLoop *loop;
 static dbus_bool_t already_quit = FALSE;