diff --git a/awx/main/models/inventory.py b/awx/main/models/inventory.py
index 9b7cb546d0..b27cbdf307 100644
--- a/awx/main/models/inventory.py
+++ b/awx/main/models/inventory.py
@@ -1578,12 +1578,6 @@ class InventorySource(UnifiedJobTemplate, InventorySourceOptions, RelatedJobsMix
                                     "Instead, configure the corresponding source project to update on launch."))
         return self.update_on_launch
 
-    def clean_overwrite_vars(self):  # TODO: remove when Ansible 2.4 becomes unsupported, obviously
-        if self.source == 'scm' and not self.overwrite_vars:
-            if get_ansible_version() < LooseVersion('2.5'):
-                raise ValidationError(_("SCM type sources must set `overwrite_vars` to `true` until Ansible 2.5."))
-        return self.overwrite_vars
-
     def clean_source_path(self):
         if self.source != 'scm' and self.source_path:
             raise ValidationError(_("Cannot set source_path if not SCM type."))
diff --git a/awx/main/tests/unit/models/test_inventory.py b/awx/main/tests/unit/models/test_inventory.py
index 7c58fa9972..c8a701acd2 100644
--- a/awx/main/tests/unit/models/test_inventory.py
+++ b/awx/main/tests/unit/models/test_inventory.py
@@ -78,12 +78,6 @@ class TestControlledBySCM():
         'ec2',
         'manual',
     ])
-    def test_clean_overwrite_vars_valid(self, source):
-        inv_src = InventorySource(overwrite_vars=True,
-                                  source=source)
-
-        inv_src.clean_overwrite_vars()
-
     def test_clean_source_path_valid(self):
         inv_src = InventorySource(source_path='/not_real/',
                                   source='scm')