diff --git a/tests/suites/test_suite_pk.function b/tests/suites/test_suite_pk.function
index 5fa8a69..33453ac 100644
--- a/tests/suites/test_suite_pk.function
+++ b/tests/suites/test_suite_pk.function
@@ -43,7 +43,7 @@
                        const unsigned char *input, unsigned char *output,
                        size_t output_max_len )
 {
-    return( mbedtls_rsa_pkcs1_decrypt( (mbedtls_rsa_context *) ctx, NULL, NULL, mode, olen,
+    return( mbedtls_rsa_pkcs1_decrypt( (mbedtls_rsa_context *) ctx, rnd_std_rand, NULL, mode, olen,
                                input, output, output_max_len ) );
 }
 int mbedtls_rsa_sign_func( void *ctx,
@@ -51,7 +51,9 @@
                    int mode, mbedtls_md_type_t md_alg, unsigned int hashlen,
                    const unsigned char *hash, unsigned char *sig )
 {
-    return( mbedtls_rsa_pkcs1_sign( (mbedtls_rsa_context *) ctx, f_rng, p_rng, mode,
+    ((void) f_rng);
+    ((void) p_rng);
+    return( mbedtls_rsa_pkcs1_sign( (mbedtls_rsa_context *) ctx, rnd_std_rand, NULL, mode,
                             md_alg, hashlen, hash, sig ) );
 }
 size_t mbedtls_rsa_key_len_func( void *ctx )