diff --git a/configure.in b/configure.in
index 92baca896..f6460b4dd 100644
--- a/configure.in
+++ b/configure.in
@@ -1,7 +1,7 @@
 dnl Process this file with autoconf to produce a configure script.
 AC_REVISION($Revision$)
 AC_INIT(lib/krb5/send_to_kdc.c)
-AC_CONFIG_HEADER(config.h)
+AM_CONFIG_HEADER(config.h)
 
 AC_CANONICAL_HOST
 CANONICAL_HOST=$host
@@ -30,7 +30,7 @@ dnl test
 
 AC_C_BIGENDIAN
 
-AM_C_PROTOTYPES
+dnl AM_C_PROTOTYPES
 
 dnl Checks for libraries.