diff --git a/src/systemd/sd-lldp.h b/src/systemd/sd-lldp.h
index ef9596838b..3f35eebea3 100644
--- a/src/systemd/sd-lldp.h
+++ b/src/systemd/sd-lldp.h
@@ -23,6 +23,7 @@
 
 #include <inttypes.h>
 #include <net/ethernet.h>
+#include <sys/types.h>
 
 #include "sd-event.h"