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-rw-r--r--libguile/foreign.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/libguile/foreign.c b/libguile/foreign.c
index 62ebb03ac..783411897 100644
--- a/libguile/foreign.c
+++ b/libguile/foreign.c
@@ -195,7 +195,7 @@ SCM_DEFINE (scm_scm_to_pointer, "scm->pointer", 1, 0, 0,
SCM ret;
ret = scm_from_pointer ((void*) SCM_UNPACK (scm), NULL);
- if (SCM_NIMP (ret))
+ if (SCM_HEAP_OBJECT_P (ret))
register_weak_reference (ret, scm);
return ret;