diff --git a/src/polynomial.rs b/src/polynomial.rs
index d7f08fa..a70b442 100644
--- a/src/polynomial.rs
+++ b/src/polynomial.rs
@@ -122,7 +122,7 @@ where
 
     /// Find the minimum degree of the polynomial.
     pub fn min_degree(&self, poly_props: &PolynomialProperties<T>) -> u32 {
-        if let Some(idx) = self.nonzero.iter().next() {
+        if let Some(idx) = self.nonzero.first() {
             return poly_props.semigroup.degrees[*idx as usize];
         }
         poly_props.semigroup.max_degree + 1
diff --git a/src/semigroup/error.rs b/src/semigroup/error.rs
index 4226f32..12eccbb 100644
--- a/src/semigroup/error.rs
+++ b/src/semigroup/error.rs
@@ -2,7 +2,7 @@
 
 use core::fmt;
 
-/// An error structure for non-positive degrees of non-identity elements.
+/// An error structure for semigroup errors.
 #[derive(Debug, Clone, PartialEq)]
 pub enum SemigroupError {
     NonPositiveDegreeError,