diff --git a/examples/sign.py b/examples/sign.py
index 8cc39d4..3ed982a 100644
--- a/examples/sign.py
+++ b/examples/sign.py
@@ -120,7 +120,7 @@ def request_uv(self, permissions, rd_id):
 credentials = [auth_data.credential_data]
 
 # PRF result:
-sign_result = result.extension_results.get("sign")
+sign_result = result.extension_results.sign
 print("CREATE sign result", sign_result)
 sign_key = sign_result.generated_key
 if not sign_key:
@@ -163,7 +163,7 @@ def request_uv(self, permissions, rd_id):
 # Only one cred in allowCredentials, only one response.
 result = result.get_response(0)
 
-sign_result = result.extension_results["sign"]
+sign_result = result.extension_results.sign
 print("GET sign result", sign_result)
 
 print("Test verify signature", sign_result.get("signature"))