diff --git a/evennia/utils/containers.py b/evennia/utils/containers.py
index d3392b1a14..a94a92454b 100644
--- a/evennia/utils/containers.py
+++ b/evennia/utils/containers.py
@@ -106,6 +106,7 @@ class GlobalScriptContainer(Container):
         callables from settings but a custom dict of tuples.
 
     """
+    __BASE_SCRIPT_TYPECLASS = class_from_module(settings.BASE_SCRIPT_TYPECLASS)
 
     def __init__(self):
         """
@@ -205,7 +206,9 @@ class GlobalScriptContainer(Container):
             for key, data in list(self.loaded_data.items()):
                 try:
                     typeclass = data.get("typeclass", settings.BASE_SCRIPT_TYPECLASS)
-                    self.typeclass_storage[key] = class_from_module(typeclass)
+                    script_typeclass = class_from_module(typeclass)
+                    assert issubclass(script_typeclass, self.__BASE_SCRIPT_TYPECLASS)
+                    self.typeclass_storage[key] = script_typeclass
                 except Exception:
                     logger.log_trace(
                         f"GlobalScriptContainer could not start import global script {key}. "
diff --git a/evennia/utils/tests/test_containers.py b/evennia/utils/tests/test_containers.py
new file mode 100644
index 0000000000..6967cd725e
--- /dev/null
+++ b/evennia/utils/tests/test_containers.py
@@ -0,0 +1,86 @@
+import unittest
+
+from evennia.utils import containers
+from django.conf import settings
+from evennia.utils.utils import class_from_module
+
+_BASE_SCRIPT_TYPECLASS = class_from_module(settings.BASE_SCRIPT_TYPECLASS)
+
+class GoodScript(_BASE_SCRIPT_TYPECLASS):
+  pass
+
+class BadScript:
+  """Not subclass of _BASE_SCRIPT_TYPECLASS,"""
+  pass
+
+class WorseScript(_BASE_SCRIPT_TYPECLASS):
+  """objects will fail upon call"""
+  @property
+  def objects(self):
+    from evennia import module_that_doesnt_exist
+
+class TestGlobalScriptContainer(unittest.TestCase):
+
+  def setUp(self):
+    settings.GLOBAL_SCRIPTS = {}
+
+  def patch_global_scripts(self, adict):
+    settings.GLOBAL_SCRIPTS.update(adict)
+
+  def test_init_with_no_scripts(self):
+    gsc = containers.GlobalScriptContainer()
+
+    self.assertEqual(len(gsc.loaded_data), 0)
+
+  def test_init_with_typeclassless_script(self):
+    self.patch_global_scripts({'script_name': {}})
+
+    gsc = containers.GlobalScriptContainer()
+
+    self.assertEqual(len(gsc.loaded_data), 1)
+    self.assertIn('script_name', gsc.loaded_data)
+
+  def test_start_with_no_scripts(self):
+    gsc = containers.GlobalScriptContainer()
+
+    gsc.start()
+
+    self.assertEqual(len(gsc.typeclass_storage), 0)
+
+  def test_start_with_typeclassless_script_defaults_to_base(self):
+    self.patch_global_scripts({'script_name': {}})
+    gsc = containers.GlobalScriptContainer()
+
+    gsc.start()
+
+    self.assertEqual(len(gsc.typeclass_storage), 1)
+    self.assertIn('script_name', gsc.typeclass_storage)
+    self.assertEqual(gsc.typeclass_storage['script_name'], _BASE_SCRIPT_TYPECLASS)
+
+  def test_start_with_typeclassed_script_loads_it(self):
+    self.patch_global_scripts({'script_name': {'typeclass': 'evennia.utils.tests.test_containers.GoodScript'}})
+    gsc = containers.GlobalScriptContainer()
+
+    gsc.start()
+
+    self.assertEqual(len(gsc.typeclass_storage), 1)
+    self.assertIn('script_name', gsc.typeclass_storage)
+    self.assertEqual(gsc.typeclass_storage['script_name'], GoodScript)
+
+  def test_start_with_bad_typeclassed_script_skips_it(self):
+    self.patch_global_scripts({'script_name': {'typeclass': 'evennia.utils.tests.test_containers.BadScript'}})
+    gsc = containers.GlobalScriptContainer()
+
+    gsc.start()
+
+    self.assertEqual(len(gsc.typeclass_storage), 0)
+    self.assertNotIn('script_name', gsc.typeclass_storage)
+
+  def test_start_with_worst_typeclassed_script_skips_it(self):
+    self.patch_global_scripts({'script_name': {'typeclass': 'evennia.utils.tests.test_containers.WorstScript'}})
+    gsc = containers.GlobalScriptContainer()
+
+    gsc.start()
+
+    self.assertEqual(len(gsc.typeclass_storage), 0)
+    self.assertNotIn('script_name', gsc.typeclass_storage)