diff --git a/programs/pkey/dh_client.c b/programs/pkey/dh_client.c
index f06b906..c5c6f75 100644
--- a/programs/pkey/dh_client.c
+++ b/programs/pkey/dh_client.c
@@ -239,7 +239,7 @@
     fflush( stdout );
 
     n = dhm.len;
-    if( ( ret = dhm_calc_secret( &dhm, buf, &n ) ) != 0 )
+    if( ( ret = dhm_calc_secret( &dhm, buf, &n, NULL, NULL ) ) != 0 )
     {
         printf( " failed\n  ! dhm_calc_secret returned %d\n\n", ret );
         goto exit;