diff --git a/app/Api/Auth.php b/app/Api/Auth.php
index c7c5298cb..6c6e1ebec 100644
--- a/app/Api/Auth.php
+++ b/app/Api/Auth.php
@@ -31,6 +31,7 @@ class Auth extends Base
         } elseif ($this->isAppAuthenticated($username, $password)) {
             $this->checkProcedurePermission(false, $method);
         } else {
+            $this->logger->error('API authentication failure for '.$username);
             throw new AuthenticationFailure('Wrong credentials');
         }
     }