diff --git a/usr.sbin/spray/spray.c b/usr.sbin/spray/spray.c
index fd08e2d812a5..7ce260166255 100644
--- a/usr.sbin/spray/spray.c
+++ b/usr.sbin/spray/spray.c
@@ -33,6 +33,7 @@ static const char rcsid[] =
   "$FreeBSD$";
 #endif /* not lint */
 
+#include <err.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <unistd.h>