diff --git a/Objects/abstract.c b/Objects/abstract.c
index 93eda62..2d48a11 100644
--- a/Objects/abstract.c
+++ b/Objects/abstract.c
@@ -1501,7 +1501,7 @@
 {
     if (PyDict_Check(s))
         return 0;
-    return s != NULL && s->ob_type->tp_as_sequence &&
+    return s->ob_type->tp_as_sequence &&
         s->ob_type->tp_as_sequence->sq_item != NULL;
 }