diff --git a/config.h.in b/config.h.in
index d8f3c9161..b660c549d 100644
--- a/config.h.in
+++ b/config.h.in
@@ -1,7 +1,7 @@
 #ifndef __config_H                                           /* -*- c++ -*- */
 #define __config_H
 /*
- * Copyright (c) 2001-2009 Stephen Williams (steve@icarus.com)
+ * Copyright (c) 2001-2010 Stephen Williams (steve@icarus.com)
  *
  *    This source code is free software; you can redistribute it
  *    and/or modify it in source code form under the terms of the GNU
@@ -50,6 +50,10 @@
 # include  <inttypes.h>
 #endif
 
+/* These two are needed by the lxt and lxt2 files (copied from GTKWave). */
+# define HAVE_ALLOCA_H 1
+# define HAVE_FSEEKO 1
+
 /*
  * Define this if you want to compile vvp with memory freeing and
  * special valgrind hooks for the memory pools.
diff --git a/vpi/vpi_config.h.in b/vpi/vpi_config.h.in
index 5765e4215..d03ebcfa4 100644
--- a/vpi/vpi_config.h.in
+++ b/vpi/vpi_config.h.in
@@ -28,10 +28,6 @@
 # undef HAVE_FMAX
 # undef WORDS_BIGENDIAN
 
-/* These two are needed by the lxt and lxt2 files (copied from GTKWave). */
-# undef HAVE_ALLOCA_H
-# undef HAVE_FSEEKO
-
 # undef _LARGEFILE_SOURCE
 #ifdef _LARGEFILE_SOURCE
 # define _FILE_OFFSET_BITS 64