diff --git a/scheme/cyclone/transforms.sld b/scheme/cyclone/transforms.sld
index 1ede1845..7e236a75 100644
--- a/scheme/cyclone/transforms.sld
+++ b/scheme/cyclone/transforms.sld
@@ -658,6 +658,7 @@
           env
           rename-env))
        ((or (define-syntax? this-exp)
+            (let-syntax? this-exp)
             (lambda? this-exp)
             (set!? this-exp)
             (if? this-exp))