diff --git a/libtiff/tiffiop.h b/libtiff/tiffiop.h
index ab2b28b2..49d12d9a 100644
--- a/libtiff/tiffiop.h
+++ b/libtiff/tiffiop.h
@@ -1,4 +1,4 @@
-/* $Id: tiffiop.h,v 1.37 2005-07-07 16:00:50 dron Exp $ */
+/* $Id: tiffiop.h,v 1.38 2005-07-11 14:45:18 dron Exp $ */
 
 /*
  * Copyright (c) 1988-1997 Sam Leffler
@@ -32,25 +32,25 @@
 
 #include "tif_config.h"
 
-#if HAVE_FCNTL_H
+#ifdef HAVE_FCNTL_H
 # include <fcntl.h>
 #endif
 
-#if HAVE_SYS_TYPES_H
+#ifdef HAVE_SYS_TYPES_H
 # include <sys/types.h>
 #endif
 
-#if HAVE_STRING_H
+#ifdef HAVE_STRING_H
 # include <string.h>
 #endif
 
-#if HAVE_ASSERT_H
+#ifdef HAVE_ASSERT_H
 # include <assert.h>
 #else
 # define assert(x) 
 #endif
 
-#if HAVE_SEARCH_H
+#ifdef HAVE_SEARCH_H
 # include <search.h>
 #else
 extern void *lfind(const void *, const void *, size_t *, size_t,