diff --git a/src/filters/select/eval/mod.rs b/src/filters/select/eval/mod.rs
index 2fc2bea4..c5704547 100644
--- a/src/filters/select/eval/mod.rs
+++ b/src/filters/select/eval/mod.rs
@@ -510,8 +510,7 @@ fn iter_tx_datums(tx: &ParsedTx) -> impl Iterator<Item = &[u8]> {
     let a = tx
         .outputs
         .iter()
-        .map(|x| &x.datum)
-        .flatten()
+        .flat_map(|x| &x.datum)
         .map(|x| x.hash.as_ref());
 
     a
diff --git a/src/filters/wasm_plugin.rs b/src/filters/wasm_plugin.rs
index 886c7853..210cbd53 100644
--- a/src/filters/wasm_plugin.rs
+++ b/src/filters/wasm_plugin.rs
@@ -43,7 +43,7 @@ impl Stage {
         let output = match output {
             serde_json::Value::Null => vec![],
             serde_json::Value::Array(x) => x.into_iter().map(Record::GenericJson).collect(),
-            x @ _ => vec![Record::GenericJson(x)],
+            x => vec![Record::GenericJson(x)],
         };
 
         Ok(output)