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-rw-r--r--libguile/dynwind.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/libguile/dynwind.c b/libguile/dynwind.c
index a4f7c3de5..5f13c9242 100644
--- a/libguile/dynwind.c
+++ b/libguile/dynwind.c
@@ -184,7 +184,7 @@ static SCM
winder_mark (SCM w)
{
if (WINDER_MARK_P (w))
- return WINDER_DATA (w);
+ return SCM_PACK (WINDER_DATA (w));
return SCM_BOOL_F;
}