diff --git a/curve25519-dalek/src/backend/serial/fiat_u32/field.rs b/curve25519-dalek/src/backend/serial/fiat_u32/field.rs
index 411e75fef..d8c2355d2 100644
--- a/curve25519-dalek/src/backend/serial/fiat_u32/field.rs
+++ b/curve25519-dalek/src/backend/serial/fiat_u32/field.rs
@@ -239,7 +239,7 @@ impl FieldElement2625 {
         FieldElement2625(output)
     }
 
-    /// Serialize this `FieldElement51` to a 32-byte array.  The
+    /// Serialize this `FieldElement2625` to a 32-byte array.  The
     /// encoding is canonical.
     pub fn to_bytes(self) -> [u8; 32] {
         let mut bytes = [0u8; 32];
diff --git a/curve25519-dalek/src/backend/serial/u32/field.rs b/curve25519-dalek/src/backend/serial/u32/field.rs
index 2aff69684..11cf338fe 100644
--- a/curve25519-dalek/src/backend/serial/u32/field.rs
+++ b/curve25519-dalek/src/backend/serial/u32/field.rs
@@ -431,7 +431,7 @@ impl FieldElement2625 {
         FieldElement2625::reduce(h)
     }
 
-    /// Serialize this `FieldElement51` to a 32-byte array.  The
+    /// Serialize this `FieldElement2625` to a 32-byte array.  The
     /// encoding is canonical.
     #[allow(clippy::identity_op)]
     pub fn to_bytes(self) -> [u8; 32] {