diff --git a/programs/pkey/key_app_writer.c b/programs/pkey/key_app_writer.c
index c78f990..3661341 100644
--- a/programs/pkey/key_app_writer.c
+++ b/programs/pkey/key_app_writer.c
@@ -89,14 +89,14 @@
 
     if( opt.output_format == OUTPUT_FORMAT_PEM )
     {
-        if( ( ret = x509write_pubkey_pem( key, output_buf, 16000 ) ) != 0 )
+        if( ( ret = pk_write_pubkey_pem( key, output_buf, 16000 ) ) != 0 )
             return( ret );
 
         len = strlen( (char *) output_buf );
     }
     else
     {
-        if( ( ret = x509write_pubkey_der( key, output_buf, 16000 ) ) < 0 )
+        if( ( ret = pk_write_pubkey_der( key, output_buf, 16000 ) ) < 0 )
             return( ret );
 
         len = ret;
@@ -125,14 +125,14 @@
     memset(output_buf, 0, 16000);
     if( opt.output_format == OUTPUT_FORMAT_PEM )
     {
-        if( ( ret = x509write_key_pem( key, output_buf, 16000 ) ) != 0 )
+        if( ( ret = pk_write_key_pem( key, output_buf, 16000 ) ) != 0 )
             return( ret );
 
         len = strlen( (char *) output_buf );
     }
     else
     {
-        if( ( ret = x509write_key_der( key, output_buf, 16000 ) ) < 0 )
+        if( ( ret = pk_write_key_der( key, output_buf, 16000 ) ) < 0 )
             return( ret );
 
         len = ret;