1 files changed, 2 insertions, 0 deletions
diff --git a/cppawk-include/cons-priv.h b/cppawk-include/cons-priv.h
index a5ffbd0..95c8cee 100644
--- a/cppawk-include/cons-priv.h
+++ b/cppawk-include/cons-priv.h
@@ -191,6 +191,8 @@ function __unbox(__obj,
     __of ("C")
       __error("unbox: %s looks like a cons", __obj, i)
       __cbreak
+    __of ("")
+      __cret("nil")
     __otherwise
       __cret (__obj)
   }