diff --git a/corres2math/lists.py b/corres2math/lists.py
index 9804ac6..a8cbac2 100644
--- a/corres2math/lists.py
+++ b/corres2math/lists.py
@@ -1,14 +1,13 @@
 import os
 
-from sympasoap import Client
-
 _client = None
 
 
-def get_sympa_client() -> Client:
+def get_sympa_client():
     global _client
     if _client is None:
         if os.getenv("SYMPA_PASSWORD", None) is not None:
+            from sympasoap import Client
             _client = Client("https://" + os.getenv("SYMPA_URL"))
             _client.login(os.getenv("SYMPA_EMAIL"), os.getenv("SYMPA_PASSWORD"))
         else: