diff --git a/daemon.c b/daemon.c
index 5335d212c..fc3951cf7 100644
--- a/daemon.c
+++ b/daemon.c
@@ -15,6 +15,10 @@
 #include "exec_cmd.h"
 #include "interpolate.h"
 
+#ifndef HOST_NAME_MAX
+#define HOST_NAME_MAX 256
+#endif
+
 static int log_syslog;
 static int verbose;
 static int reuseaddr;