diff --git a/ActiveCollabAPI/ACAuthenticator.py b/ActiveCollabAPI/ACAuthenticator.py
index 7d6f8d6..0c96fb6 100644
--- a/ActiveCollabAPI/ACAuthenticator.py
+++ b/ActiveCollabAPI/ACAuthenticator.py
@@ -40,9 +40,9 @@ class ACAuthenticator:
         self.accounts = login_res['accounts']
         return login_res
 
-    def find_account(self, value, field='user_display_name'):
-        found = list(filter(lambda a: a[field] == value,
+    def find_account(self, value, key='user_display_name'):
+        found = list(filter(lambda a: a[key] == value,
                             self.accounts))
         if len(found) == 0:
-            raise Exception("Account '%s' not found!" % name)
+            raise Exception("Account '%s=%s' not found!" % (key, value))
         return found[0]