1 files changed, 1 insertions, 1 deletions
diff --git a/eval.c b/eval.c
index a1566c4c..9cb75aa7 100644
--- a/eval.c
+++ b/eval.c
@@ -3483,7 +3483,7 @@ void eval_init(void)
   reg_fun(intern(lit("set-diff"), user_package), func_n4o(set_diff, 2));
 
   reg_fun(intern(lit("length"), user_package), func_n1(length));
-
+  reg_fun(intern(lit("copy"), user_package), func_n1(copy));
   reg_fun(intern(lit("sub"), user_package), func_n3o(sub, 1));
   reg_fun(intern(lit("ref"), user_package), func_n2(ref));
   reg_fun(intern(lit("refset"), user_package), func_n3(refset));