1 files changed, 1 insertions, 1 deletions
diff --git a/rand.c b/rand.c
index 91d122ec..ce3a69a7 100644
--- a/rand.c
+++ b/rand.c
@@ -83,7 +83,7 @@ static val make_state(void)
 
 val random_state_p(val obj)
 {
-  return typeof(obj) == random_state_s ? t : nil;
+  return cobjclassp(obj, random_state_s);
 }
 
 INLINE rand32_t *rstate(struct rand_state *r, int offs)