--- a/unit/test-dbus.c
+++ b/unit/test-dbus.c
@@ -32,6 +32,10 @@
 
 #define TEST_BUS_ADDRESS "unix:path=/tmp/ell-test-bus"
 
+#ifndef WAIT_ANY
+#define WAIT_ANY (-1)
+#endif
+
 static pid_t dbus_daemon_pid = -1;
 
 static void start_dbus_daemon(void)


--- a/unit/test-dbus-message-fds.c
+++ b/unit/test-dbus-message-fds.c
@@ -37,6 +37,10 @@
 
 #define TEST_BUS_ADDRESS "unix:path=/tmp/ell-test-bus"
 
+#ifndef WAIT_ANY
+#define WAIT_ANY (-1)
+#endif
+
 static pid_t dbus_daemon_pid = -1;
 
 static bool start_dbus_daemon(void)


--- a/unit/test-dbus-properties.c
+++ b/unit/test-dbus-properties.c
@@ -34,6 +34,10 @@
 
 #define TEST_BUS_ADDRESS "unix:path=/tmp/ell-test-bus"
 
+#ifndef WAIT_ANY
+#define WAIT_ANY (-1)
+#endif
+
 static pid_t dbus_daemon_pid = -1;
 
 static bool start_dbus_daemon(void)