diff --git a/action/config_template.py b/action/config_template.py
index d986fe0..ff277ff 100644
--- a/action/config_template.py
+++ b/action/config_template.py
@@ -672,18 +672,12 @@ class ActionModule(ActionBase):
         # Content from config_template is converted to src
         new_module_args.pop('content', None)
 
-        # Set the diff data before running the copy module
-        _diff = self._get_diff_data(_vars['dest'], transferred_data, task_vars)
-
         # Run the copy module
         rc = self._execute_module(
             module_name='copy',
             module_args=new_module_args,
             task_vars=task_vars
         )
-        if self._play_context.diff:
-            rc['diff'] = []
-            rc['diff'].append(_diff)
         if self._task.args.get('content'):
             os.remove(_vars['source'])
         return rc
diff --git a/tox.ini b/tox.ini
index d36032d..be21078 100644
--- a/tox.ini
+++ b/tox.ini
@@ -34,7 +34,6 @@ setenv =
     ANSIBLE_LOOKUP_PLUGINS={toxinidir}/lookup
     ANSIBLE_STRATEGY_PLUGINS={toxinidir}/strategy
     ANSIBLE_LIBRARY={toxinidir}/library
-    ANSIBLE_PARAMETERS=--diff
 
 
 [testenv:docs]