diff --git a/scheme/cyclone/util.sld b/scheme/cyclone/util.sld
index eef68acf..b8f1747d 100644
--- a/scheme/cyclone/util.sld
+++ b/scheme/cyclone/util.sld
@@ -298,6 +298,7 @@
    '(
      (define . define)
      (define-syntax . define-syntax)
+     (define-c . define-c)
      (if . if)
      (lambda . lambda)
      (quote . quote)