diff --git a/library/oid.c b/library/oid.c
index 53c2e5d..51851ba 100644
--- a/library/oid.c
+++ b/library/oid.c
@@ -33,6 +33,8 @@
 #include "polarssl/md.h"
 #include "polarssl/rsa.h"
 
+#include <stdio.h>
+
 /*
  * For X520 attribute types
  */
@@ -77,6 +79,7 @@
     }
 };
 
+#if defined(POLARSSL_X509_PARSE_C) || defined(POLARSSL_X509_WRITE_C)
 /*
  * For X509 extensions
  */
@@ -123,6 +126,7 @@
     { OID_OCSP_SIGNING,     "id-kp-OCSPSigning",     "OCSP Signing" },
     { NULL, NULL, NULL },
 };
+#endif /* POLARSSL_X509_PARSE_C || POLARSSL_X509_WRITE_C */
 
 /*
  * For SignatureAlgorithmIdentifier
@@ -378,6 +382,7 @@
                                     oid->p, oid->len );
 }
 
+#if defined(POLARSSL_X509_PARSE_C) || defined(POLARSSL_X509_WRITE_C)
 int oid_get_extended_key_usage( const asn1_buf *oid, const char **desc )
 {
     const oid_descriptor_t *data = oid_descriptor_from_asn1(
@@ -401,6 +406,20 @@
                                 oid );
 }
 
+int oid_get_x509_ext_type( const asn1_buf *oid, int *ext_type )
+{
+    const oid_x509_ext_t *data = oid_x509_ext_from_asn1( oid );
+
+    if( data == NULL )
+        return( POLARSSL_ERR_OID_NOT_FOUND );
+
+    *ext_type = data->ext_type;
+
+    return( 0 );
+}
+
+#endif /* POLARSSL_X509_PARSE_C || POLARSSL_X509_WRITE_C */
+
 static const oid_x520_attr_t *oid_x520_attr_from_asn1( const asn1_buf *oid )
 {
     return (const oid_x520_attr_t *) oid_descriptor_from_asn1(
@@ -433,18 +452,6 @@
                                 oid );
 }
 
-int oid_get_x509_ext_type( const asn1_buf *oid, int *ext_type )
-{
-    const oid_x509_ext_t *data = oid_x509_ext_from_asn1( oid );
-
-    if( data == NULL )
-        return( POLARSSL_ERR_OID_NOT_FOUND );
-
-    *ext_type = data->ext_type;
-
-    return( 0 );
-}
-
 int oid_get_attr_short_name( const asn1_buf *oid, const char **short_name )
 {
     const oid_x520_attr_t *data = oid_x520_attr_from_asn1( oid );