diff --git a/src/field/fft.rs b/src/field/fft.rs
index 76e0fd42..ba94f6a7 100644
--- a/src/field/fft.rs
+++ b/src/field/fft.rs
@@ -43,7 +43,7 @@ fn fft_dispatch<F: Field>(
     } else {
         Some(fft_root_table(input.len()))
     };
-    let used_root_table = root_table.or_else(|| computed_root_table.as_ref()).unwrap();
+    let used_root_table = root_table.or(computed_root_table.as_ref()).unwrap();
 
     fft_classic(input, zero_factor.unwrap_or(0), used_root_table)
 }
diff --git a/src/gadgets/sorting.rs b/src/gadgets/sorting.rs
index 2059a888..c4378ab9 100644
--- a/src/gadgets/sorting.rs
+++ b/src/gadgets/sorting.rs
@@ -128,8 +128,7 @@ impl<F: RichField + Extendable<D>, const D: usize> SimpleGenerator<F>
     fn dependencies(&self) -> Vec<Target> {
         self.input_ops
             .iter()
-            .map(|op| vec![op.is_write.target, op.address, op.timestamp, op.value])
-            .flatten()
+            .flat_map(|op| vec![op.is_write.target, op.address, op.timestamp, op.value])
             .collect()
     }