diff --git a/tests/data/test545 b/tests/data/test545
index 0bba688aef6604..f2a5dddee6a418 100644
Binary files a/tests/data/test545 and b/tests/data/test545 differ
diff --git a/tests/libtest/lib544.c b/tests/libtest/lib544.c
index b766187f27b063..4a4e4f223a4d25 100644
--- a/tests/libtest/lib544.c
+++ b/tests/libtest/lib544.c
@@ -5,7 +5,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 1998 - 2011, Daniel Stenberg, <daniel@haxx.se>, et al.
+ * Copyright (C) 1998 - 2014, Daniel Stenberg, <daniel@haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -30,7 +30,10 @@ static char teststring[] =
   "\x72\x79\x20\x64\x61\x74\x61\x20\x77\x69\x74\x68\x20\x61\x6e\x20\x65\x6d"
   "\x62\x65\x64\x64\x65\x64\x20\x4e\x55\x4c\x20\x62\x79\x74\x65\x0a";
 #else
-  "This\0 is test binary data with an embedded NUL byte\n";
+{   'T', 'h', 'i', 's', '\0', ' ', 'i', 's', ' ', 't', 'e', 's', 't', ' ',
+    'b', 'i', 'n', 'a', 'r', 'y', ' ', 'd', 'a', 't', 'a', ' ',
+    'w', 'i', 't', 'h', ' ', 'a', 'n', ' ',
+    'e', 'm', 'b', 'e', 'd', 'd', 'e', 'd', ' ', 'N', 'U', 'L'};
 #endif
 
 
@@ -54,7 +57,7 @@ int test(char *URL)
   test_setopt(curl, CURLOPT_URL, URL);
 
 #ifdef LIB545
-  test_setopt(curl, CURLOPT_POSTFIELDSIZE, (long) sizeof teststring - 1);
+  test_setopt(curl, CURLOPT_POSTFIELDSIZE, (long) sizeof teststring);
 #endif
 
   test_setopt(curl, CURLOPT_COPYPOSTFIELDS, teststring);