1 files changed, 1 insertions, 1 deletions

diff --git a/bank-eiffel/studentaccount.e b/bank-eiffel/studentaccount.e
index abbb070..8367489 100644
--- a/bank-eiffel/studentaccount.e
+++ b/bank-eiffel/studentaccount.e
@@ -13,7 +13,7 @@ create
 
 feature -- Basic operations
 
-        add_authorized_signer (an_authorized_signer: PERSON)
+        add_authorized_signer (an_authorized_signer: STUDENT)
                 do
                         check
                                 authorized_signers_only_one: get_authorized_signers.count = 0