diff --git a/ethcontract/src/int.rs b/ethcontract/src/int.rs
index 02f9d844..ed07c06e 100644
--- a/ethcontract/src/int.rs
+++ b/ethcontract/src/int.rs
@@ -1326,8 +1326,8 @@ mod tests {
 
                 assert_eq!(I256::from(42 as $unsigned).to_string(), "42");
                 assert_eq!(
-                    I256::from(<$unsigned>::max_value()).to_string(),
-                    <$unsigned>::max_value().to_string(),
+                    I256::from(<$unsigned>::MIN).to_string(),
+                    <$unsigned>::MAX.to_string(),
                 );
 
                 assert!(matches!(<$signed>::try_from(small_positive), Ok(42)));