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-rw-r--r--libguile/eval.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/libguile/eval.c b/libguile/eval.c
index 5aba969aa..49f1b583b 100644
--- a/libguile/eval.c
+++ b/libguile/eval.c
@@ -3654,7 +3654,8 @@ scm_closure (SCM code, SCM env)
{
SCM z;
SCM closcar = scm_cons (code, SCM_EOL);
- z = scm_cell (SCM_UNPACK (closcar) + scm_tc3_closure, (scm_t_bits) env);
+ z = scm_immutable_cell (SCM_UNPACK (closcar) + scm_tc3_closure,
+ (scm_t_bits) env);
scm_remember_upto_here (closcar);
return z;
}