diff --git a/xmtp_mls/src/groups/group_mutable_metadata.rs b/xmtp_mls/src/groups/group_mutable_metadata.rs
index a688e1ad5..64f46ab4a 100644
--- a/xmtp_mls/src/groups/group_mutable_metadata.rs
+++ b/xmtp_mls/src/groups/group_mutable_metadata.rs
@@ -45,7 +45,7 @@ pub enum MetadataField {
 }
 
 impl MetadataField {
-    pub fn as_str(&self) -> &'static str {
+    pub const fn as_str(&self) -> &'static str {
         match self {
             MetadataField::GroupName => "group_name",
             MetadataField::Description => "description",