diff --git a/openssl/src/nid.rs b/openssl/src/nid.rs
index f835d9e6..bfcae15a 100644
--- a/openssl/src/nid.rs
+++ b/openssl/src/nid.rs
@@ -104,7 +104,8 @@ pub enum Nid {
     G,
     S,
     I,
-    uid, // uniqueIdentifier
+    /// uniqueIdentifier
+    UID,
     CrlDistributionPoints,
     RSA_NP_MD5,
     SN,
@@ -170,5 +171,6 @@ pub enum Nid {
     ID_QT_UNOTICE,
     RC2_64_CBC,
     SMIMECaps,
-    UID = 458 // userId
+    /// Shown as UID in cert subject
+    UserId = 458
 }
diff --git a/openssl/src/x509/tests.rs b/openssl/src/x509/tests.rs
index dbca8b98..69ad37f8 100644
--- a/openssl/src/x509/tests.rs
+++ b/openssl/src/x509/tests.rs
@@ -151,7 +151,7 @@ fn test_nid_uid_value() {
     let cert = X509::from_pem(&mut file).ok().expect("Failed to load PEM");
     let subject = cert.subject_name();
 
-    let cn = match subject.text_by_nid(Nid::UID) {
+    let cn = match subject.text_by_nid(Nid::UserId) {
         Some(x) => x,
         None => panic!("Failed to read UID from cert"),
     };