diff --git a/dbus_client.c b/dbus_client.c
index e0e4fac..2ac6153 100644
--- a/dbus_client.c
+++ b/dbus_client.c
@@ -1,3 +1,5 @@
+#define _DEFAULT_SOURCE
+
 #include "dbus_client.h"
 
 #include <stdio.h>