diff --git a/pallas-miniprotocols/src/txmonitor/codec.rs b/pallas-miniprotocols/src/txmonitor/codec.rs
index 878f314..10f9cdf 100644
--- a/pallas-miniprotocols/src/txmonitor/codec.rs
+++ b/pallas-miniprotocols/src/txmonitor/codec.rs
@@ -53,7 +53,7 @@ impl<'b> Decode<'b, ()> for Message {
                 log::trace!("Decoding 6, 2. Array: {:?}", de);
                 let tag: Result<u8, pallas_codec::minicbor::decode::Error> = d.u8();
                 let mut tx = None;
-                if let Ok(_) = tag {
+                if tag.is_ok() {
                     log::trace!("Decoding 6, Tag: {:?}", tag);
                     let det = d.tag();
                     log::trace!("Decoding 6, Bytes: {:?}", det);
@@ -74,14 +74,15 @@ impl<'b> Decode<'b, ()> for Message {
             9 => Ok(Message::MsgQuery(MsgRequest::MsgGetSizes)),
             10 => {
                 d.array()?;
-                let capacity = d.decode()?;
+                let capacity_in_bytes = d.decode()?;
                 let size_in_bytes = d.decode()?;
-                let number_of_tx = d.decode()?;
+                let number_of_txs = d.decode()?;
+
                 Ok(Message::MsgResponse(MsgResponse::MsgReplyGetSizes(
                     MempoolSizeAndCapacity {
-                        capacity_in_bytes: capacity,
-                        size_in_bytes: size_in_bytes,
-                        number_of_txs: number_of_tx,
+                        capacity_in_bytes,
+                        size_in_bytes,
+                        number_of_txs,
                     },
                 )))
             }
diff --git a/pallas-miniprotocols/src/txmonitor/mod.rs b/pallas-miniprotocols/src/txmonitor/mod.rs
index 022f11f..153d76b 100644
--- a/pallas-miniprotocols/src/txmonitor/mod.rs
+++ b/pallas-miniprotocols/src/txmonitor/mod.rs
@@ -69,7 +69,7 @@ where
 {
     pub fn initial(state: State) -> Self {
         Self {
-            state: state,
+            state,
             snapshot: None,
             request: None,
             output: None,
@@ -234,7 +234,7 @@ where
                 State::StBusy(StBusyKind::GetSizes),
                 Message::MsgResponse(MsgResponse::MsgReplyGetSizes(msc)),
             ) => self.on_reply_get_size(msc),
-            (state, msg) => Err(MachineError::invalid_msg::<Self>(&state, &msg)),
+            (state, msg) => Err(MachineError::invalid_msg::<Self>(state, &msg)),
         }
     }
 }