Index: custom/u_pfe.c
--- custom/u_pfe.c.orig
+++ custom/u_pfe.c
@@ -53,7 +53,7 @@ int u_pfe_allowed = 0; /* CUSTOM undefined */
 
 #  include <sys/wait.h>
 #  include <sys/time.h>
-#  include <sys/errno.h>
+#  include <errno.h>
 #  include <sys/param.h> /* MAXPATHLEN attow */
 #  include <sys/types.h>
 #  include <sys/wait.h>
