diff --git a/platform-bsd.c b/platform-bsd.c
index 0a23acb3..f6323577 100644
--- a/platform-bsd.c
+++ b/platform-bsd.c
@@ -31,6 +31,7 @@
 #include <sys/utsname.h>
 #include <netinet/in.h>
 
+#include <errno.h>
 #include <stdlib.h>
 #include <syslog.h>