diff --git a/src/db/fjall_adapter.rs b/src/db/fjall_adapter.rs
index 1a9919f2..9e9efe9f 100644
--- a/src/db/fjall_adapter.rs
+++ b/src/db/fjall_adapter.rs
@@ -287,7 +287,7 @@ impl<'a> ITx for FjallTx<'a> {
 	}
 	fn len(&self, tree_idx: usize) -> TxOpResult<usize> {
 		let tree = self.get_tree(tree_idx)?;
-		Ok(self.tx.len(tree)? as usize)
+		Ok(self.tx.len(tree)?)
 	}
 
 	fn insert(&mut self, tree_idx: usize, key: &[u8], value: &[u8]) -> TxOpResult<()> {
diff --git a/src/net/recv.rs b/src/net/recv.rs
index 50705f24..24961903 100644
--- a/src/net/recv.rs
+++ b/src/net/recv.rs
@@ -89,7 +89,7 @@ pub(crate) trait RecvLoop: Sync + 'static {
 			let has_cont = (size & CHUNK_FLAG_HAS_CONTINUATION) != 0;
 			let is_error = (size & CHUNK_FLAG_ERROR) != 0;
 			let size = (size & CHUNK_LENGTH_MASK) as usize;
-			let mut next_slice = vec![0; size as usize];
+			let mut next_slice = vec![0; size];
 			read.read_exact(&mut next_slice[..]).await?;
 
 			let packet = if is_error {
diff --git a/src/rpc/system.rs b/src/rpc/system.rs
index 107102b0..d7e0741a 100644
--- a/src/rpc/system.rs
+++ b/src/rpc/system.rs
@@ -856,6 +856,7 @@ impl NodeStatus {
 		};
 
 		let mount_avail = |path: &Path| match statvfs(path) {
+			#[allow(clippy::unnecessary_cast)]
 			Ok(x) => {
 				let avail = x.blocks_available() as u64 * x.fragment_size() as u64;
 				let total = x.blocks() as u64 * x.fragment_size() as u64;