diff --git a/lib/roken/roken.h.in b/lib/roken/roken.h.in
index d982085b4..05525ca22 100644
--- a/lib/roken/roken.h.in
+++ b/lib/roken/roken.h.in
@@ -1,6 +1,6 @@
 /* -*- C -*- */
 /*
- * Copyright (c) 1995, 1996, 1997, 1998 Kungliga Tekniska Högskolan
+ * Copyright (c) 1995, 1996, 1997, 1998, 1999 Kungliga Tekniska Högskolan
  * (Royal Institute of Technology, Stockholm, Sweden).
  * All rights reserved.
  * 
@@ -371,6 +371,10 @@ extern int opterr;
 extern const char *__progname;
 #endif
 
+#ifndef HAVE_ENVIRON_DECLARATION
+extern char **environ;
+#endif
+
 /*
  * kludges and such
  */