diff --git a/api/models.py b/api/models.py
index de821cb..5a1215d 100644
--- a/api/models.py
+++ b/api/models.py
@@ -93,8 +93,8 @@ class TemporaryUser(models.Model):
         verbose_name = "Temporary User"
         verbose_name_plural = "Temporary Users"
 
-    def __str__(self):
-        return self.t_username
+    def __str__(self) -> str:
+        return str(self.t_username)
 
 
 class Atoll(models.Model):