diff --git a/borsh-serde-adapter/src/deserialize_adapter.rs b/borsh-serde-adapter/src/deserialize_adapter.rs
index cc961f0..2e3ac1f 100644
--- a/borsh-serde-adapter/src/deserialize_adapter.rs
+++ b/borsh-serde-adapter/src/deserialize_adapter.rs
@@ -1,6 +1,5 @@
 use std::collections::HashMap;
 use std::io::{Error};
-use std::u128;
 
 use borsh::schema::{BorshSchemaContainer, Definition, Fields};
 use borsh::{BorshDeserialize};