diff --git a/examples/soroban_auth_atomic_swap.py b/examples/soroban_auth_atomic_swap.py
index ad271cf1..ca236026 100644
--- a/examples/soroban_auth_atomic_swap.py
+++ b/examples/soroban_auth_atomic_swap.py
@@ -64,6 +64,8 @@
     # if the error is not None, you need to handle it.
     op = tx.transaction.operations[0]
     assert isinstance(op, InvokeHostFunction)
+    assert simulate_resp.results is not None
+    assert simulate_resp.results[0].auth is not None
     op.auth = [
         authorize_entry(
             simulate_resp.results[0].auth[0],
diff --git a/examples/soroban_auth_with_stellar_account.py b/examples/soroban_auth_with_stellar_account.py
index f8d188b6..ea02a739 100644
--- a/examples/soroban_auth_with_stellar_account.py
+++ b/examples/soroban_auth_with_stellar_account.py
@@ -52,6 +52,8 @@
     # if the error is not None, you need to handle it.
     op = tx.transaction.operations[0]
     assert isinstance(op, InvokeHostFunction)
+    assert simulate_resp.results is not None
+    assert simulate_resp.results[0].auth is not None
     op.auth = [
         authorize_entry(
             simulate_resp.results[0].auth[0],