diff --git a/src/client.rs b/src/client.rs
index ae8a5a91c8..c243d0fc91 100644
--- a/src/client.rs
+++ b/src/client.rs
@@ -213,7 +213,7 @@ where
     where
         <<<T as ExtrinsicExtraData<T>>::Extra as SignedExtra<T>>::Extra as SignedExtension>::AdditionalSigned: Send + Sync + 'static
     {
-        let extrinsic = self.create_signed(signer).await?;
+        let extrinsic = self.create_signed(signer, Default::default()).await?;
         self.client
             .rpc()
             .submit_and_watch_extrinsic(extrinsic, self.client.events_decoder())
@@ -235,7 +235,7 @@ where
     where
         <<<T as ExtrinsicExtraData<T>>::Extra as SignedExtra<T>>::Extra as SignedExtension>::AdditionalSigned: Send + Sync + 'static
     {
-        let extrinsic = self.create_signed(signer).await?;
+        let extrinsic = self.create_signed(signer, Default::default()).await?;
         self.client.rpc().submit_extrinsic(extrinsic).await
     }
 
@@ -243,6 +243,7 @@ where
     pub async fn create_signed(
         &self,
         signer: &(dyn Signer<T> + Send + Sync),
+        additional_params: <T::Extra as SignedExtra<T>>::Parameters,
     ) -> Result<UncheckedExtrinsic<T>, Error>
     where
         <<<T as ExtrinsicExtraData<T>>::Extra as SignedExtra<T>>::Extra as SignedExtension>::AdditionalSigned: Send + Sync + 'static
@@ -273,6 +274,7 @@ where
             account_nonce,
             call,
             signer,
+            additional_params,
         )
         .await?;
         Ok(signed)
diff --git a/src/extrinsic/extra.rs b/src/extrinsic/extra.rs
index 62c66bd6f6..6388c49517 100644
--- a/src/extrinsic/extra.rs
+++ b/src/extrinsic/extra.rs
@@ -230,6 +230,8 @@ impl SignedExtension for ChargeTransactionPayment {
 pub trait SignedExtra<T: Config>: SignedExtension {
     /// The type the extras.
     type Extra: SignedExtension + Send + Sync;
+    /// The additional config parameters.
+    type Parameters: Default + Send + Sync;
 
     /// Creates a new `SignedExtra`.
     fn new(
@@ -237,6 +239,7 @@ pub trait SignedExtra<T: Config>: SignedExtension {
         tx_version: u32,
         nonce: T::Index,
         genesis_hash: T::Hash,
+        additional_params: Self::Parameters,
     ) -> Self;
 
     /// Returns the transaction extra.
@@ -263,12 +266,14 @@ impl<T: Config + Clone + Debug + Eq + Send + Sync> SignedExtra<T> for DefaultExt
         CheckWeight<T>,
         ChargeTransactionPayment,
     );
+    type Parameters = ();
 
     fn new(
         spec_version: u32,
         tx_version: u32,
         nonce: T::Index,
         genesis_hash: T::Hash,
+        _params: Self::Parameters,
     ) -> Self {
         DefaultExtra {
             spec_version,
diff --git a/src/extrinsic/mod.rs b/src/extrinsic/mod.rs
index 542382bab5..376e5b54e1 100644
--- a/src/extrinsic/mod.rs
+++ b/src/extrinsic/mod.rs
@@ -68,6 +68,7 @@ pub async fn create_signed<T>(
     nonce: T::Index,
     call: Encoded,
     signer: &(dyn Signer<T> + Send + Sync),
+    additional_params: <T::Extra as SignedExtra<T>>::Parameters,
 ) -> Result<UncheckedExtrinsic<T>, Error>
 where
     T: Config + ExtrinsicExtraData<T>,
@@ -81,6 +82,7 @@ where
         tx_version,
         nonce,
         genesis_hash,
+        additional_params,
     );
     let payload = SignedPayload::<T>::new(call, extra.extra())?;
     let signed = signer.sign(payload).await?;