diff --git a/kdf.js b/kdf.js
index 2e8f14f..f38a0e7 100644
--- a/kdf.js
+++ b/kdf.js
@@ -3,8 +3,6 @@ const isBuffer = require('is-buffer')
 /* eslint-disable camelcase */
 const {
   crypto_kdf_CONTEXTBYTES,
-  crypto_kdf_BYTES_MAX,
-  crypto_kdf_BYTES_MIN,
   crypto_kdf_KEYBYTES,
 
   crypto_kdf_derive_from_key,
diff --git a/test/kdf.js b/test/kdf.js
index d46b071..b77b593 100644
--- a/test/kdf.js
+++ b/test/kdf.js
@@ -6,8 +6,6 @@ const kdf = require('../kdf')
 /* eslint-disable camelcase */
 const {
   crypto_kdf_CONTEXTBYTES,
-  crypto_kdf_BYTES_MAX,
-  crypto_kdf_BYTES_MIN,
   crypto_kdf_KEYBYTES,
 } = require('sodium-universal')