diff --git a/scsh/scsh-package.scm b/scsh/scsh-package.scm
index f4cc469..b9836de 100644
--- a/scsh/scsh-package.scm
+++ b/scsh/scsh-package.scm
@@ -132,7 +132,7 @@
 ;   (scsh-regexp-package scsh-regexp-interface)
 )
   (for-syntax (open scsh-syntax-helpers scheme))
-  (access sigevents scsh-events)
+  (access sigevents scsh-events threads)
   (open enumerated
 	defenum-package
 	external-calls           ;JMG new FFI