diff --git a/contrib/nghttpx.service.in b/contrib/nghttpx.service.in
index f02fb020..58a39969 100644
--- a/contrib/nghttpx.service.in
+++ b/contrib/nghttpx.service.in
@@ -5,6 +5,7 @@ After=network.target
 [Service]
 Type=forking
 ExecStart=@bindir@/nghttpx --conf=/etc/nghttpx/nghttpx.conf --pid-file=/run/nghttpx.pid --daemon
+PIDFile=/run/nghttpx.pid
 
 [Install]
 WantedBy=multi-user.target