diff --git a/Python/asdl.c b/Python/asdl.c
index ccd8714..225df6e 100644
--- a/Python/asdl.c
+++ b/Python/asdl.c
@@ -8,18 +8,12 @@
 	size_t n = sizeof(asdl_seq) +
 			(size ? (sizeof(void *) * (size - 1)) : 0);
 
-	seq = (asdl_seq *)malloc(n);
+    seq = (asdl_seq *)PyArena_Malloc(arena, n);
 	if (!seq) {
 		PyErr_NoMemory();
 		return NULL;
 	}
-        PyArena_AddMallocPointer(arena, (void *)seq);
 	memset(seq, 0, n);
 	seq->size = size;
 	return seq;
 }
-
-void
-asdl_seq_free(asdl_seq *seq)
-{
-}