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-rw-r--r--libguile/null-threads.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/libguile/null-threads.c b/libguile/null-threads.c
index a4affd96b..7f2eb8b43 100644
--- a/libguile/null-threads.c
+++ b/libguile/null-threads.c
@@ -245,7 +245,7 @@ scm_timed_wait_condition_variable (SCM c, SCM m, SCM t)
s_wait_condition_variable);
if (!SCM_UNBNDP (t))
{
- if (SCM_CONSP (t))
+ if (scm_is_pair (t))
{
SCM_VALIDATE_UINT_COPY (3, SCM_CAR(t), waittime.tv_sec);
SCM_VALIDATE_UINT_COPY (3, SCM_CDR(t), waittime.tv_usec);