diff --git a/tests/unittests/torture_pki_ecdsa.c b/tests/unittests/torture_pki_ecdsa.c
index e9939d56..fc755e22 100644
--- a/tests/unittests/torture_pki_ecdsa.c
+++ b/tests/unittests/torture_pki_ecdsa.c
@@ -217,13 +217,15 @@ static void torture_pki_ecdsa_duplicate_key(void **state)
     assert_true(rc == 0);
 
     privkey_dup = ssh_key_dup(privkey);
-    assert_true(privkey_dup != NULL);
+    assert_non_null(privkey_dup);
 
     rc = ssh_pki_export_privkey_to_pubkey(privkey, &pubkey);
     assert_true(rc == SSH_OK);
+    assert_non_null(pubkey);
 
     rc = ssh_pki_export_pubkey_base64(pubkey, &b64_key_gen);
     assert_true(rc == 0);
+    assert_non_null(b64_key_gen);
 
     assert_string_equal(b64_key, b64_key_gen);