diff --git a/phpseclib/Crypt/ChaCha20.php b/phpseclib/Crypt/ChaCha20.php
index dcd7f0e0..91aae45c 100644
--- a/phpseclib/Crypt/ChaCha20.php
+++ b/phpseclib/Crypt/ChaCha20.php
@@ -15,7 +15,6 @@
 
 namespace phpseclib3\Crypt;
 
-use phpseclib3\Crypt\Common\StreamCipher;
 use phpseclib3\Exception\InsufficientSetupException;
 use phpseclib3\Exception\BadDecryptionException;