diff --git a/tests/auto/wayland/reconnect/tst_reconnect.cpp b/tests/auto/wayland/reconnect/tst_reconnect.cpp
index e32784ba0a3..5f3d49bd38d 100644
--- a/tests/auto/wayland/reconnect/tst_reconnect.cpp
+++ b/tests/auto/wayland/reconnect/tst_reconnect.cpp
@@ -22,6 +22,8 @@
 
 #include "wl-socket.h"
 
+#include <unistd.h>
+
 using namespace MockCompositor;
 
 class TestWindow : public QRasterWindow