diff --git a/include/mbedtls/oid.h b/include/mbedtls/oid.h
index 4198eb1..739a42f 100644
--- a/include/mbedtls/oid.h
+++ b/include/mbedtls/oid.h
@@ -145,6 +145,7 @@
 #define MBEDTLS_OID_AT_DN_QUALIFIER             MBEDTLS_OID_AT "\x2E" /**< id-at-dnQualifier AttributeType:= {id-at 46} */
 #define MBEDTLS_OID_AT_PSEUDONYM                MBEDTLS_OID_AT "\x41" /**< id-at-pseudonym AttributeType:= {id-at 65} */
 
+#define MBEDTLS_OID_UID                         "\x09\x92\x26\x89\x93\xF2\x2C\x64\x01\x01" /** id-domainComponent AttributeType:= {itu-t(0) data(9) pss(2342) ucl(19200300) pilot(100) pilotAttributeType(1) uid(1)} */
 #define MBEDTLS_OID_DOMAIN_COMPONENT            "\x09\x92\x26\x89\x93\xF2\x2C\x64\x01\x19" /** id-domainComponent AttributeType:= {itu-t(0) data(9) pss(2342) ucl(19200300) pilot(100) pilotAttributeType(1) domainComponent(25)} */
 
 /*
diff --git a/library/oid.c b/library/oid.c
index 14a1a92..472c038 100644
--- a/library/oid.c
+++ b/library/oid.c
@@ -238,6 +238,10 @@
         "pseudonym",
     },
     {
+        OID_DESCRIPTOR( MBEDTLS_OID_UID,            "id-uid",                         "User Id" ),
+        "uid",
+    },
+    {
         OID_DESCRIPTOR( MBEDTLS_OID_DOMAIN_COMPONENT, "id-domainComponent",           "Domain component" ),
         "DC",
     },