diff --git a/scsh/scsh-interfaces.scm b/scsh/scsh-interfaces.scm
index c97bf3f..f6e273a 100644
--- a/scsh/scsh-interfaces.scm
+++ b/scsh/scsh-interfaces.scm
@@ -1211,6 +1211,7 @@
 (define-interface lib-dirs-interface
   (export lib-dirs
           find-library-file
+          default-lib-dirs
 
           lib-dirs-append-script-dir!
           lib-dirs-prepend-script-dir!