diff --git a/test/encryption.js b/test/encryption.js
index af0e2ad..d283fd0 100644
--- a/test/encryption.js
+++ b/test/encryption.js
@@ -25,7 +25,7 @@ test ('fail decryption', (t) => {
 test ('rethrow decryption', (t) => {
   const enc = crypto.encrypt_aes ('foo', 'bar');
   t.throws (() => {
-    const dec = crypto.decrypt_aes (enc, 'baz', true);
+    crypto.decrypt_aes (enc, 'baz', true);
   });
 });