diff --git a/e2e/tests/utils/helpers.py b/e2e/tests/utils/helpers.py
index 6e53e9d77..47e81e9d7 100644
--- a/e2e/tests/utils/helpers.py
+++ b/e2e/tests/utils/helpers.py
@@ -65,7 +65,7 @@ def change_jwks_url(
 
 
 def create_client_assertion(
-    claims, private_key, additional_headers={"kid": "test-1"}, algorithm=" "
+    claims, private_key, additional_headers={"kid": "test-1"}, algorithm="RS512"
 ):
     return jwt.encode(
         claims, private_key, algorithm=algorithm, headers=additional_headers