diff --git a/substrate/tendermint/src/ext.rs b/substrate/tendermint/src/ext.rs
index e2f047eb..383376f1 100644
--- a/substrate/tendermint/src/ext.rs
+++ b/substrate/tendermint/src/ext.rs
@@ -46,7 +46,7 @@ pub trait SignatureScheme: Send + Sync {
   fn sign(&self, msg: &[u8]) -> Self::Signature;
   /// Verify a signature from the validator in question.
   #[must_use]
-  fn verify(&self, validator: Self::ValidatorId, msg: &[u8], sig: Self::Signature) -> bool;
+  fn verify(&self, validator: Self::ValidatorId, msg: &[u8], sig: &Self::Signature) -> bool;
 
   /// Aggregate signatures.
   fn aggregate(sigs: &[Self::Signature]) -> Self::AggregateSignature;
@@ -54,8 +54,8 @@ pub trait SignatureScheme: Send + Sync {
   #[must_use]
   fn verify_aggregate(
     &self,
-    msg: &[u8],
     signers: &[Self::ValidatorId],
+    msg: &[u8],
     sig: &Self::AggregateSignature,
   ) -> bool;
 }
@@ -142,8 +142,8 @@ pub trait Network: Send + Sync {
     commit: &Commit<Self::SignatureScheme>,
   ) -> bool {
     if !self.signature_scheme().verify_aggregate(
-      &commit_msg(commit.round, id.as_ref()),
       &commit.validators,
+      &commit_msg(commit.round, id.as_ref()),
       &commit.signature,
     ) {
       return false;
diff --git a/substrate/tendermint/src/lib.rs b/substrate/tendermint/src/lib.rs
index 5472ce6d..5b65b3b9 100644
--- a/substrate/tendermint/src/lib.rs
+++ b/substrate/tendermint/src/lib.rs
@@ -278,7 +278,7 @@ impl<N: Network + 'static> TendermintMachine<N> {
           loop {
             match msg_recv.try_recv() {
               Ok(msg) => {
-                if !machine.signer.verify(msg.msg.sender, &msg.msg.encode(), msg.sig) {
+                if !machine.signer.verify(msg.msg.sender, &msg.msg.encode(), &msg.sig) {
                   continue;
                 }
                 machine.queue.push((false, msg.msg));
@@ -345,7 +345,7 @@ impl<N: Network + 'static> TendermintMachine<N> {
   ) -> Result<Option<N::Block>, TendermintError<N::ValidatorId>> {
     // Verify the signature if this is a precommit
     if let Data::Precommit(Some((id, sig))) = &msg.data {
-      if !self.signer.verify(msg.sender, &commit_msg(msg.round, id.as_ref()), sig.clone()) {
+      if !self.signer.verify(msg.sender, &commit_msg(msg.round, id.as_ref()), sig) {
         // Since we verified this validator actually sent the message, they're malicious
         Err(TendermintError::Malicious(msg.sender))?;
       }
diff --git a/substrate/tendermint/tests/ext.rs b/substrate/tendermint/tests/ext.rs
index 51751d9e..6f489f7a 100644
--- a/substrate/tendermint/tests/ext.rs
+++ b/substrate/tendermint/tests/ext.rs
@@ -1,8 +1,11 @@
-use std::{sync::Arc, time::SystemTime};
+use std::{
+  sync::Arc,
+  time::{SystemTime, Duration},
+};
 
 use parity_scale_codec::{Encode, Decode};
 
-use tokio::sync::RwLock;
+use tokio::{sync::RwLock, time::sleep};
 
 use tendermint_machine::{ext::*, SignedMessage, TendermintMachine, TendermintHandle};
 
@@ -23,7 +26,7 @@ impl SignatureScheme for TestSignatureScheme {
   }
 
   #[must_use]
-  fn verify(&self, validator: u16, msg: &[u8], sig: [u8; 32]) -> bool {
+  fn verify(&self, validator: u16, msg: &[u8], sig: &[u8; 32]) -> bool {
     (sig[.. 2] == validator.to_le_bytes()) && (&sig[2 ..] == &[msg, &[0; 30]].concat()[.. 30])
   }
 
@@ -34,13 +37,13 @@ impl SignatureScheme for TestSignatureScheme {
   #[must_use]
   fn verify_aggregate(
     &self,
-    msg: &[u8],
     signers: &[TestValidatorId],
+    msg: &[u8],
     sigs: &Vec<[u8; 32]>,
   ) -> bool {
     assert_eq!(signers.len(), sigs.len());
     for sig in signers.iter().zip(sigs.iter()) {
-      assert!(self.verify(*sig.0, msg, *sig.1));
+      assert!(self.verify(*sig.0, msg, sig.1));
     }
     true
   }
@@ -140,7 +143,7 @@ impl TestNetwork {
 #[tokio::test]
 async fn test() {
   TestNetwork::new(4).await;
-  for _ in 0 .. 100 {
-    tokio::task::yield_now().await;
+  for _ in 0 .. 10 {
+    sleep(Duration::from_secs(1)).await;
   }
 }