diff --git a/scheme/ikarus.boot.4.prebuilt b/scheme/ikarus.boot.4.prebuilt
index 968ce98..4f796af 100644
Binary files a/scheme/ikarus.boot.4.prebuilt and b/scheme/ikarus.boot.4.prebuilt differ
diff --git a/scheme/ikarus.boot.8.prebuilt b/scheme/ikarus.boot.8.prebuilt
index 9fa89f2..0d1afe7 100644
Binary files a/scheme/ikarus.boot.8.prebuilt and b/scheme/ikarus.boot.8.prebuilt differ
diff --git a/scheme/ikarus.main.ss b/scheme/ikarus.main.ss
index ac1aebb..faa6fe7 100644
--- a/scheme/ikarus.main.ss
+++ b/scheme/ikarus.main.ss
@@ -58,7 +58,7 @@
     (library-path
       (cons "."
         (append 
-          (split (getenv "IKARUS_LIBRARY_PATH"))
+          (split (or (getenv "IKARUS_LIBRARY_PATH") ""))
           (list ikarus-lib-dir))))
     (let ([prefix
            (lambda (ext ls)
diff --git a/scheme/last-revision b/scheme/last-revision
index 216c09c..b9eea8f 100644
--- a/scheme/last-revision
+++ b/scheme/last-revision
@@ -1 +1 @@
-1699
+1700