diff --git a/appl/ftp/ftp/main.c b/appl/ftp/ftp/main.c
index 51b41f9d0..921e6418d 100644
--- a/appl/ftp/ftp/main.c
+++ b/appl/ftp/ftp/main.c
@@ -39,6 +39,8 @@
 
 #ifndef HAVE___PROGNAME
 char *__progname = "ftp";
+#else
+extern char *__progname;
 #endif
 
 int