diff --git a/configure.in b/configure.in
index 6ebf3b2..5c85682 100644
--- a/configure.in
+++ b/configure.in
@@ -198,6 +198,7 @@ if test "$HAVEMETHOD" = "no"; then
         AC_TRY_RUN(
         #include <dlfcn.h>
         #include <stdio.h>
+        #include <stdlib.h>
     
         int
         main(int argc, char **argv)
diff --git a/xdr.c b/xdr.c
index ed8bf5b..a20bbd9 100644
--- a/xdr.c
+++ b/xdr.c
@@ -103,7 +103,7 @@ xdr_msg(XDR *xdrs, struct msg *msg)
 {
 	X(xdr_short(xdrs, &msg->status));
 	X(xdr_union(xdrs, (int *)&msg->type, (char *)&msg->data,
-	      xdr_msg_discrim, _xdr_void));
+	      xdr_msg_discrim, (xdrproc_t)_xdr_void));
 
 	return (TRUE);
 }