diff --git a/AUTHORS.rst b/AUTHORS.rst
index 16602a25..bf4279f3 100644
--- a/AUTHORS.rst
+++ b/AUTHORS.rst
@@ -147,6 +147,7 @@ Authors
 - `Sridhar Marella <https://github.com/sridhar562345>`_
 - `Mattia Fantoni <https://github.com/MattFanto>`_
 - `Trent Holliday <https://github.com/trumpet2012>`_
+- `Kigathi Chege <https://github.com/kigathi-chege>`_
 
 Background
 ==========
diff --git a/simple_history/models.py b/simple_history/models.py
index b007efbf..888e013e 100644
--- a/simple_history/models.py
+++ b/simple_history/models.py
@@ -644,8 +644,7 @@ def get_meta_options(self, model):
             )
         meta_fields["verbose_name"] = name
         meta_fields["verbose_name_plural"] = plural_name
-        if self.app:
-            meta_fields["app_label"] = self.app
+        meta_fields["app_label"] = self.app if self.app else model._meta.app_label
         if self._date_indexing == "composite":
             meta_fields["indexes"] = (
                 models.Index(fields=("history_date", model._meta.pk.attname)),