diff --git a/src/array/binary/mutable.rs b/src/array/binary/mutable.rs
index 9ddc99d0ab3..9f918e15901 100644
--- a/src/array/binary/mutable.rs
+++ b/src/array/binary/mutable.rs
@@ -269,7 +269,7 @@ impl<O: Offset> MutableBinaryArray<O> {
         P: AsRef<[u8]>,
         I: TrustedLen<Item = P>,
     {
-        // Safety: The iterator must be `TrustedLen`
+        // Safety: The iterator is `TrustedLen`
         unsafe { self.extend_trusted_len_values_unchecked(iterator) }
     }
 
@@ -301,7 +301,7 @@ impl<O: Offset> MutableBinaryArray<O> {
         P: AsRef<[u8]>,
         I: TrustedLen<Item = Option<P>>,
     {
-        // Safety: The iterator must be `TrustedLen`
+        // Safety: The iterator is `TrustedLen`
         unsafe { self.extend_trusted_len_unchecked(iterator) }
     }