diff --git a/substrate/core/test-runtime/src/system.rs b/substrate/core/test-runtime/src/system.rs
index f1c75122a01f4d836d6490c207d6fea4c4dae0b2..ba0f25590d793343a2b83f39ac92b52dc54cfab3 100644
--- a/substrate/core/test-runtime/src/system.rs
+++ b/substrate/core/test-runtime/src/system.rs
@@ -19,7 +19,7 @@
 
 use rstd::prelude::*;
 use runtime_io::{storage_root, storage_changes_root, blake2_256};
-use runtime_support::storage::{self, StorageValue, StorageMap};
+use runtime_support::storage::{self, StorageMap};
 use runtime_support::{decl_storage, decl_module};
 use sr_primitives::{
 	traits::{Hash as HashT, BlakeTwo256, Header as _}, generic, ApplyError, ApplyResult,