diff --git a/Modules/selectmodule.c b/Modules/selectmodule.c
index e594b51..db3e33c 100644
--- a/Modules/selectmodule.c
+++ b/Modules/selectmodule.c
@@ -100,8 +100,10 @@ seq2set(PyObject *seq, fd_set *set, pylist fd2obj[FD_SETSIZE + 1])
         SOCKET v;
 
         /* any intervening fileno() calls could decr this refcnt */
-        if (!(o = PySequence_Fast_GET_ITEM(fast_seq, i)))
+        if (!(o = PySequence_Fast_GET_ITEM(fast_seq, i))) {
+    	    Py_DECREF(fast_seq);
             return -1;
+        }
 
         Py_INCREF(o);
         v = PyObject_AsFileDescriptor( o );