diff --git a/library/pkparse.c b/library/pkparse.c
index d8ee64a..aec43f1 100644
--- a/library/pkparse.c
+++ b/library/pkparse.c
@@ -924,6 +924,7 @@
 /*
  * Parse an encrypted PKCS#8 encoded private key
  */
+#if defined(POLARSSL_PKCS12_C) || defined(POLARSSL_PKCS5_C)
 static int pk_parse_key_pkcs8_encrypted_der(
                                     pk_context *pk,
                                     const unsigned char *key, size_t keylen,
@@ -1041,6 +1042,7 @@
 
     return( pk_parse_key_pkcs8_unencrypted_der( pk, buf, len ) );
 }
+#endif /* POLARSSL_PKCS12_C || POLARSSL_PKCS5_C */
 
 /*
  * Parse a private key
@@ -1132,6 +1134,7 @@
     else if( ret != POLARSSL_ERR_PEM_NO_HEADER_FOOTER_PRESENT )
         return( ret );
 
+#if defined(POLARSSL_PKCS12_C) || defined(POLARSSL_PKCS5_C)
     ret = pem_read_buffer( &pem,
                            "-----BEGIN ENCRYPTED PRIVATE KEY-----",
                            "-----END ENCRYPTED PRIVATE KEY-----",
@@ -1150,6 +1153,7 @@
     }
     else if( ret != POLARSSL_ERR_PEM_NO_HEADER_FOOTER_PRESENT )
         return( ret );
+#endif /* POLARSSL_PKCS12_C || POLARSSL_PKCS5_C */
 #else
     ((void) pwd);
     ((void) pwdlen);
@@ -1162,6 +1166,7 @@
     * We try the different DER format parsers to see if one passes without
     * error
     */
+#if defined(POLARSSL_PKCS12_C) || defined(POLARSSL_PKCS5_C)
     if( ( ret = pk_parse_key_pkcs8_encrypted_der( pk, key, keylen,
                                                   pwd, pwdlen ) ) == 0 )
     {
@@ -1174,6 +1179,7 @@
     {
         return( ret );
     }
+#endif /* POLARSSL_PKCS12_C || POLARSSL_PKCS5_C */
 
     if( ( ret = pk_parse_key_pkcs8_unencrypted_der( pk, key, keylen ) ) == 0 )
         return( 0 );