diff --git a/srfi/69.sld b/srfi/69.sld
index 52bd51d8..8463001e 100644
--- a/srfi/69.sld
+++ b/srfi/69.sld
@@ -40,6 +40,7 @@
   )
   (import (scheme base)
           (scheme char)
+          (scheme complex)
           ;(scheme cyclone util)
   )
   (begin