diff --git a/jflib/send_nsca.py b/jflib/send_nsca.py
index 6d7d07d..256b051 100644
--- a/jflib/send_nsca.py
+++ b/jflib/send_nsca.py
@@ -82,7 +82,8 @@
     import Crypto.Cipher.DES
     import Crypto.Cipher.DES3
     import Crypto.Cipher.CAST
-    import Crypto.Util.randpool
+    # pycryptodome has no randpool
+    # import Crypto.Util.randpool
 except ImportError:
     from unittest.mock import Mock
     Crypto = Mock()