diff --git a/library/oid.c b/library/oid.c
index a2d8f8e967..06b535fbae 100644
--- a/library/oid.c
+++ b/library/oid.c
@@ -291,11 +291,11 @@ static const oid_x509_ext_t oid_x509_ext[] =
         MBEDTLS_OID_X509_EXT_CERTIFICATE_POLICIES,
     },
     {
-        { ADD_LEN(MBEDTLS_OID_SUBJECT_KEY_IDENTIFIER ), "id-ce-subjectKeyIdentifier",           "Subject Key Identifier" },
+        { ADD_LEN( MBEDTLS_OID_SUBJECT_KEY_IDENTIFIER ), "id-ce-subjectKeyIdentifier",           "Subject Key Identifier" },
         MBEDTLS_OID_X509_EXT_SUBJECT_KEY_IDENTIFIER,
     },
     {
-        { ADD_LEN(MBEDTLS_OID_AUTHORITY_KEY_IDENTIFIER ), "id-ce-authorityKeyIdentifier",       "Authority Key Identifier" },
+        { ADD_LEN( MBEDTLS_OID_AUTHORITY_KEY_IDENTIFIER ), "id-ce-authorityKeyIdentifier",       "Authority Key Identifier" },
         MBEDTLS_OID_X509_EXT_AUTHORITY_KEY_IDENTIFIER,
     },
     {