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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 5f13c9242..8dc5a4e03 100644
--- a/libguile/dynwind.c
+++ b/libguile/dynwind.c
@@ -98,7 +98,7 @@ SCM_DEFINE (scm_dynamic_wind, "dynamic-wind", 3, 0, 0,
#define FUNC_NAME s_scm_dynamic_wind
{
SCM ans;
- SCM_ASSERT (SCM_NFALSEP (scm_thunk_p (out_guard)),
+ SCM_ASSERT (scm_is_true (scm_thunk_p (out_guard)),
out_guard,
SCM_ARG3, FUNC_NAME);
scm_call_0 (in_guard);