diff --git a/benches/benches/src/sv1/lib/client.rs b/benches/benches/src/sv1/lib/client.rs
index cd74a93f4..b1713a560 100644
--- a/benches/benches/src/sv1/lib/client.rs
+++ b/benches/benches/src/sv1/lib/client.rs
@@ -199,8 +199,7 @@ impl IsClient<'static> for Client {
     }
 }
 pub fn extranonce_from_hex(hex: &str) -> Extranonce<'static> {
-    let data = utils::decode_hex(hex).unwrap();
-    Extranonce::try_from(data).expect("Failed to convert hex to U256")
+    Extranonce::try_from(hex).expect("Failed to convert hex to U256")
 }
 pub fn prevhash_from_hex<'a>(hex: &str) -> PrevHash<'a> {
     let data = utils::decode_hex(hex).unwrap();
diff --git a/protocols/v1/src/lib.rs b/protocols/v1/src/lib.rs
index e21ceafba..52280ba23 100644
--- a/protocols/v1/src/lib.rs
+++ b/protocols/v1/src/lib.rs
@@ -333,10 +333,7 @@ pub trait IsClient<'a> {
                 // so it doesnt really matter what the server sets the extranonce to in the mining.configure handler
                 debug!("NOTICE: Subscribe extranonce is hardcoded by server");
                 let subscribe = self
-                    .subscribe(
-                        configure.id,
-                        Some(Extranonce::try_from(hex::decode("08000002")?)?),
-                    )
+                    .subscribe(configure.id, Some(Extranonce::try_from("08000002")?))
                     .ok();
                 Ok(subscribe)
             }
diff --git a/protocols/v1/src/methods/client_to_server.rs b/protocols/v1/src/methods/client_to_server.rs
index 0e837db48..78f1ed3c5 100644
--- a/protocols/v1/src/methods/client_to_server.rs
+++ b/protocols/v1/src/methods/client_to_server.rs
@@ -173,7 +173,7 @@ impl<'a> TryFrom<StandardRequest> for Submit<'a> {
                     [JString(a), JString(b), JString(c), JNumber(d), JNumber(e), JString(f)] => (
                         a.into(),
                         b.into(),
-                        Extranonce::try_from(hex::decode(c)?)?,
+                        Extranonce::try_from(c.as_str())?,
                         HexU32Be(d.as_u64().unwrap() as u32),
                         HexU32Be(e.as_u64().unwrap() as u32),
                         Some((f.as_str()).try_into()?),
@@ -181,7 +181,7 @@ impl<'a> TryFrom<StandardRequest> for Submit<'a> {
                     [JString(a), JString(b), JString(c), JString(d), JString(e), JString(f)] => (
                         a.into(),
                         b.into(),
-                        Extranonce::try_from(hex::decode(c)?)?,
+                        Extranonce::try_from(c.as_str())?,
                         (d.as_str()).try_into()?,
                         (e.as_str()).try_into()?,
                         Some((f.as_str()).try_into()?),
@@ -189,7 +189,7 @@ impl<'a> TryFrom<StandardRequest> for Submit<'a> {
                     [JString(a), JString(b), JString(c), JNumber(d), JNumber(e)] => (
                         a.into(),
                         b.into(),
-                        Extranonce::try_from(hex::decode(c)?)?,
+                        Extranonce::try_from(c.as_str())?,
                         HexU32Be(d.as_u64().unwrap() as u32),
                         HexU32Be(e.as_u64().unwrap() as u32),
                         None,
@@ -197,7 +197,7 @@ impl<'a> TryFrom<StandardRequest> for Submit<'a> {
                     [JString(a), JString(b), JString(c), JString(d), JString(e)] => (
                         a.into(),
                         b.into(),
-                        Extranonce::try_from(hex::decode(c)?)?,
+                        Extranonce::try_from(c.as_str())?,
                         (d.as_str()).try_into()?,
                         (e.as_str()).try_into()?,
                         None,
@@ -229,7 +229,7 @@ impl Arbitrary for Submit<'static> {
         println!("\nEXTRA: {:?}\n", extra);
         let bits = Option::<u32>::arbitrary(g);
         println!("\nBITS: {:?}\n", bits);
-        let extra: Extranonce = extra.try_into().unwrap();
+        let extra: Extranonce = hex::encode(extra).as_str().try_into().unwrap();
         let bits = bits.map(|x| HexU32Be(x));
         println!("\nBITS: {:?}\n", bits);
         Submit {
@@ -319,9 +319,7 @@ impl<'a> TryFrom<StandardRequest> for Subscribe<'a> {
                 let (agent_signature, extranonce1) = match &params[..] {
                     // bosminer subscribe message
                     [JString(a), Null, JString(_), Null] => (a.into(), None),
-                    [JString(a), JString(b)] => {
-                        (a.into(), Some(Extranonce::try_from(hex::decode(b)?)?))
-                    }
+                    [JString(a), JString(b)] => (a.into(), Some(Extranonce::try_from(b.as_str())?)),
                     [JString(a)] => (a.into(), None),
                     [] => ("".to_string(), None),
                     _ => return Err(ParsingMethodError::wrong_args_from_value(msg.params)),
@@ -716,3 +714,36 @@ fn test_version_extension_with_no_bit_count() {
         _ => panic!(),
     };
 }
+
+#[test]
+fn test_mining_subscribe_even_sized_extranonce() {
+    let client_message = r#"{"id":0,
+            "method": "mining.subscribe",
+            "params": ["user agent/version", "aaeeffdd"]
+        }"#;
+    let client_message: StandardRequest = serde_json::from_str(&client_message).unwrap();
+    Subscribe::try_from(client_message).unwrap();
+}
+
+#[test]
+fn test_mining_subscribe_odd_sized_extranonce() {
+    let client_message = r#"{"id":0,
+            "method": "mining.subscribe",
+            "params": ["user agent/version", "aeeffdd"]
+        }"#;
+    let client_message: StandardRequest = serde_json::from_str(&client_message).unwrap();
+    Subscribe::try_from(client_message).unwrap();
+}
+
+#[test]
+#[should_panic(
+    expected = "called `Result::unwrap()` on an `Err` value: HexError(InvalidHexCharacter { c: 'z', index: 0 })"
+)]
+fn test_mining_subscribe_invalid_extranonce() {
+    let client_message = r#"{"id":0,
+            "method": "mining.subscribe",
+            "params": ["user agent/version", "zxczxc"]
+        }"#;
+    let client_message: StandardRequest = serde_json::from_str(&client_message).unwrap();
+    Subscribe::try_from(client_message).unwrap();
+}
diff --git a/protocols/v1/src/methods/server_to_client.rs b/protocols/v1/src/methods/server_to_client.rs
index dc5e6163e..9be2a03c6 100644
--- a/protocols/v1/src/methods/server_to_client.rs
+++ b/protocols/v1/src/methods/server_to_client.rs
@@ -221,7 +221,7 @@ impl<'a> TryFrom<Notification> for SetExtranonce<'a> {
             .ok_or_else(|| ParsingMethodError::not_array_from_value(msg.params.clone()))?;
         let (extra_nonce1, extra_nonce2_size) = match &params[..] {
             [JString(a), JNumber(b)] => (
-                Extranonce::try_from(hex::decode(a)?)?,
+                Extranonce::try_from(a.as_str())?,
                 b.as_u64()
                     .ok_or_else(|| ParsingMethodError::not_unsigned_from_value(b.clone()))?
                     as usize,