diff --git a/examples/transfer_subscribe.rs b/examples/transfer_subscribe.rs
index edcef21201..706d3fdc6f 100644
--- a/examples/transfer_subscribe.rs
+++ b/examples/transfer_subscribe.rs
@@ -42,11 +42,7 @@ async fn main() -> Result<(), Box<dyn std::error::Error>> {
     decoder.with_balances();
     let mut sub = EventSubscription::<DefaultNodeRuntime>::new(sub, decoder);
     sub.filter_event::<TransferEvent<_>>();
-    client.transfer(
-        &signer,
-        &dest,
-        10_000
-    ).await?;
+    client.transfer(&signer, &dest, 10_000).await?;
     let raw = sub.next().await.unwrap().unwrap();
     let event = TransferEvent::<DefaultNodeRuntime>::decode(&mut &raw.data[..]);
     if let Ok(e) = event {
diff --git a/src/extrinsic/extra.rs b/src/extrinsic/extra.rs
index 66709f8416..ba77a4730f 100644
--- a/src/extrinsic/extra.rs
+++ b/src/extrinsic/extra.rs
@@ -237,7 +237,7 @@ pub trait SignedExtra<T: System>: SignedExtension {
         tx_version: u32,
         nonce: T::Index,
         genesis_hash: T::Hash,
-        era_info: (Era, Option<T::Hash>)
+        era_info: (Era, Option<T::Hash>),
     ) -> Self;
 
     /// Returns the transaction extra.
@@ -252,7 +252,7 @@ pub struct DefaultExtra<T: System> {
     nonce: T::Index,
     genesis_hash: T::Hash,
     // Era and either the genesis_hash if immortal or the current hash if mortal
-    era_info: (Era, Option<T::Hash>)
+    era_info: (Era, Option<T::Hash>),
 }
 
 impl<T: System + Balances + Clone + Debug + Eq + Send + Sync> SignedExtra<T>
@@ -273,7 +273,7 @@ impl<T: System + Balances + Clone + Debug + Eq + Send + Sync> SignedExtra<T>
         tx_version: u32,
         nonce: T::Index,
         genesis_hash: T::Hash,
-        era_info: (Era, Option<T::Hash>)
+        era_info: (Era, Option<T::Hash>),
     ) -> Self {
         DefaultExtra {
             spec_version,
diff --git a/src/extrinsic/mod.rs b/src/extrinsic/mod.rs
index 8292226b6b..d4c175792a 100644
--- a/src/extrinsic/mod.rs
+++ b/src/extrinsic/mod.rs
@@ -32,8 +32,8 @@ pub use self::{
 };
 
 use sp_runtime::{
+    generic::Era,
     traits::SignedExtension,
-    generic::Era
 };
 use sp_version::RuntimeVersion;
 
diff --git a/src/lib.rs b/src/lib.rs
index 9502643ad1..98742e0220 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -61,13 +61,16 @@ use sp_core::{
     Bytes,
 };
 pub use sp_runtime::traits::SignedExtension;
+use sp_runtime::{
+    generic::Era,
+    traits::{
+        Block,
+        Header,
+    },
+    SaturatedConversion,
+};
 pub use sp_version::RuntimeVersion;
 use std::marker::PhantomData;
-use sp_runtime::{
-    traits::{Block, Header},
-    SaturatedConversion,
-    generic::Era
-};
 
 mod error;
 mod events;