diff --git a/SWIG/Lib/chicken/swigclosprefix.scm b/SWIG/Lib/chicken/swigclosprefix.scm
index e4bd72b71..14cd52f4d 100644
--- a/SWIG/Lib/chicken/swigclosprefix.scm
+++ b/SWIG/Lib/chicken/swigclosprefix.scm
@@ -1,4 +1,4 @@
-(declare (hide swig-initialize))
+(declare (hide swig-initialize swig-initialize-return))
 
 (define (swig-initialize obj initargs create)
      (slot-set! obj 'swig-this