diff --git a/include/mbedtls/oid.h b/include/mbedtls/oid.h
index afe7a81..65e626e 100644
--- a/include/mbedtls/oid.h
+++ b/include/mbedtls/oid.h
@@ -442,7 +442,6 @@
  */
 int mbedtls_oid_get_numeric_string( char *buf, size_t size, const mbedtls_asn1_buf *oid );
 
-#if defined(MBEDTLS_X509_USE_C) || defined(MBEDTLS_X509_CREATE_C)
 /**
  * \brief          Translate an X.509 extension OID into local values
  *
@@ -452,7 +451,6 @@
  * \return         0 if successful, or MBEDTLS_ERR_OID_NOT_FOUND
  */
 int mbedtls_oid_get_x509_ext_type( const mbedtls_asn1_buf *oid, int *ext_type );
-#endif
 
 /**
  * \brief          Translate an X.509 attribute type OID into the short name
diff --git a/library/oid.c b/library/oid.c
index a7ee528..294bbd6 100644
--- a/library/oid.c
+++ b/library/oid.c
@@ -148,7 +148,6 @@
     return( MBEDTLS_ERR_OID_NOT_FOUND );                                   \
 }
 
-#if defined(MBEDTLS_X509_USE_C) || defined(MBEDTLS_X509_CREATE_C)
 /*
  * For X520 attribute types
  */
@@ -296,7 +295,6 @@
 
 FN_OID_TYPED_FROM_ASN1(mbedtls_oid_descriptor_t, ext_key_usage, oid_ext_key_usage)
 FN_OID_GET_ATTR1(mbedtls_oid_get_extended_key_usage, mbedtls_oid_descriptor_t, ext_key_usage, const char *, description)
-#endif /* MBEDTLS_X509_USE_C || MBEDTLS_X509_CREATE_C */
 
 #if defined(MBEDTLS_MD_C)
 /*