--- libmalloc/libmalloc-715.100.22/tests/add_xzone_tests.py
+++ libmalloc/libmalloc-657.80.3/tests/add_xzone_tests.py
@@ -31,7 +31,6 @@
         xzone_test['CanonicalName'] = new_name
 
     envvars = [
-        'MallocAllowInternalSecurity=1',
         'MallocSecureAllocator=1',
     ]
 
@@ -85,16 +84,10 @@
         # Keep the original test, unless it's xzone-only
         if 'Tags' not in test or 'xzone_only' not in test['Tags']:
             test_copy = copy.deepcopy(test)
-
-            if 'Tags' not in test or 'no_allocator_override' not in test['Tags']:
-                # Explicitly disable xzone malloc, so that the old allocator is
-                # still tested on platforms that have xzone malloc by default
-                envvars = [
-                    'MallocAllowInternalSecurity=1',
-                    'MallocSecureAllocator=0',
-                ]
-                extend_env(test_copy, envvars)
-
+            # Explicitly disable xzone malloc, so that the old allocator is
+            # still tested on platforms that have xzone malloc by default
+            envvars = ['MallocSecureAllocator=0']
+            extend_env(test_copy, envvars)
             tests.append(test_copy)
 
         if 'Tags' in test and not disable_xzone: