diff --git a/programs/x509/cert_write.c b/programs/x509/cert_write.c
index 041f459..4b8fba9 100644
--- a/programs/x509/cert_write.c
+++ b/programs/x509/cert_write.c
@@ -577,7 +577,7 @@
         fflush( stdout );
 
         ret = mbedtls_pk_parse_keyfile( &loaded_subject_key, opt.subject_key,
-                                 opt.subject_pwd );
+                opt.subject_pwd, mbedtls_ctr_drbg_random, &ctr_drbg );
         if( ret != 0 )
         {
             mbedtls_strerror( ret, buf, 1024 );
@@ -593,7 +593,7 @@
     fflush( stdout );
 
     ret = mbedtls_pk_parse_keyfile( &loaded_issuer_key, opt.issuer_key,
-                             opt.issuer_pwd );
+            opt.issuer_pwd, mbedtls_ctr_drbg_random, &ctr_drbg );
     if( ret != 0 )
     {
         mbedtls_strerror( ret, buf, 1024 );