diff --git a/abacusnbody/data/asdf.py b/abacusnbody/data/asdf.py
index 70fbd89d..fb09266b 100644
--- a/abacusnbody/data/asdf.py
+++ b/abacusnbody/data/asdf.py
@@ -11,7 +11,6 @@
 import struct
 import time
 
-import asdf
 import blosc
 import numpy as np
 from asdf.extension import Compressor, Extension