diff --git a/minimal-examples/dbus-client/minimal-dbus-client/minimal-dbus-client.c b/minimal-examples/dbus-client/minimal-dbus-client/minimal-dbus-client.c
index 5b0f2d9c0..7f997216b 100644
--- a/minimal-examples/dbus-client/minimal-dbus-client/minimal-dbus-client.c
+++ b/minimal-examples/dbus-client/minimal-dbus-client/minimal-dbus-client.c
@@ -15,6 +15,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <unistd.h>
+#include <signal.h>
 
 #include <libwebsockets.h>
 #include <libwebsockets/lws-dbus.h>