diff --git a/books/bookvol5.pamphlet b/books/bookvol5.pamphlet
index b0c5611..9e714e7 100644
--- a/books/bookvol5.pamphlet
+++ b/books/bookvol5.pamphlet
@@ -576,6 +576,7 @@ information is initialized.
 #+:akcl (setq compiler::*compile-verbose* nil)
 #+:akcl (setq compiler::*suppress-compiler-warnings* t)
 #+:akcl (setq compiler::*suppress-compiler-notes* t)
+#+:akcl (setq si::*system-directory* "")
   (in-package "BOOT")
   (initroot)
 #+:akcl
diff --git a/changelog b/changelog
index 94a7379..5bc7cb7 100644
--- a/changelog
+++ b/changelog
@@ -1,3 +1,5 @@
+20120430 tpd src/axiom-website/patches.html 20120430.01.tpd.patch
+20120430 tpd books/bookvol5 reset si::*system-directory* to the null string
 20120429 tpd src/axiom-website/patches.html 20120429.01.tpd.patch
 20120429 tpd books/bookvol10.5 BLAS1 dnrm2
 20120428 tpd src/axiom-website/patches.html 20120428.01.tpd.patch
diff --git a/src/axiom-website/patches.html b/src/axiom-website/patches.html
index ef8a85c..a03e64c 100644
--- a/src/axiom-website/patches.html
+++ b/src/axiom-website/patches.html
@@ -3896,5 +3896,7 @@ books/bookvol10.5 BLAS1 dcopy test cases<br/>
 books/bookvol10.5 BLAS1 ddot <br/>
 <a href="patches/20120429.01.tpd.patch">20120429.01.tpd.patch</a>
 books/bookvol10.5 BLAS1 dnrm2<br/>
+<a href="patches/20120430.01.tpd.patch">20120430.01.tpd.patch</a>
+books/bookvol5 reset si::*system-directory* to the null string<br/>
  </body>
 </html>