diff --git a/rust/pv/src/uvattest/additional.rs b/rust/pv/src/uvattest/additional.rs
index 6f9b7483..0502a022 100644
--- a/rust/pv/src/uvattest/additional.rs
+++ b/rust/pv/src/uvattest/additional.rs
@@ -10,9 +10,9 @@ use std::fmt::Display;
 use zerocopy::FromBytes;
 
 /// Hash for additional-data stuff used for parsing [`AdditionalData`]
-pub(crate) type AttAddHash = [u8; ATT_ADD_HASH_SIZE as usize];
-pub(crate) const ATT_ADD_HASH_SIZE: u32 = 0x20;
-static_assert!(Keyslot::PHKH_SIZE == ATT_ADD_HASH_SIZE);
+pub(crate) type AttAddHash = [u8; PHKH_SIZE as usize];
+pub(super) const PHKH_SIZE: u32 = 0x20;
+static_assert!(Keyslot::PHKH_SIZE == PHKH_SIZE);
 
 /// Struct describing the additional-data of an Attestation Request
 #[derive(Serialize, Debug)]
diff --git a/rust/pv/src/uvattest/arcb.rs b/rust/pv/src/uvattest/arcb.rs
index f564b62c..07dd3e89 100644
--- a/rust/pv/src/uvattest/arcb.rs
+++ b/rust/pv/src/uvattest/arcb.rs
@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: MIT
 //
 // Copyright IBM Corp. 2024
-use super::{additional::ATT_ADD_HASH_SIZE, AttNonce};
+use super::{additional::PHKH_SIZE, AttNonce};
 use crate::{
     assert_size,
     attest::{AttestationMagic, AttestationMeasAlg},
@@ -310,7 +310,7 @@ static_assert!(AttestationFlags::FLAG_TO_ADD_SIZE.len() < 64);
 
 impl AttestationFlags {
     /// Maps the flag to the (maximum) required size for the additional data
-    pub(crate) const FLAG_TO_ADD_SIZE: [u32; 4] = [0, 0, ATT_ADD_HASH_SIZE, ATT_ADD_HASH_SIZE];
+    pub(crate) const FLAG_TO_ADD_SIZE: [u32; 4] = [0, 0, PHKH_SIZE, PHKH_SIZE];
 
     /// Returns the maximum size this flag requires for additional data
     pub fn expected_additional_size(&self) -> u32 {