diff --git a/tests/api/ws2p/test_ws2p.py b/tests/api/ws2p/test_ws2p.py
index 784bf49a1f98ffa17c6f1fe032b0c1e2f3adbcfa..fcb382942f24094354f5ef50f0a17a4d3f65fcb9 100644
--- a/tests/api/ws2p/test_ws2p.py
+++ b/tests/api/ws2p/test_ws2p.py
@@ -33,7 +33,8 @@ from duniterpy.documents.ws2p.messages import DocumentMessage
 
 
 class TestWs2p(unittest.TestCase):
-    def test_block(self):
+    @classmethod
+    def test_block(cls):
         json_sample = {
             "heads": [
                 {