diff --git a/django/db/models/sql/compiler.py b/django/db/models/sql/compiler.py
index 6d063c4a05..078a8477af 100644
--- a/django/db/models/sql/compiler.py
+++ b/django/db/models/sql/compiler.py
@@ -559,7 +559,7 @@ class SQLCompiler:
                         subselect, subparams = select_clone.as_sql(self, self.connection)
                         sub_selects.append(subselect)
                         sub_params.extend(subparams)
-                return 'SELECT %s FROM (%s) AS subquery' % (
+                return 'SELECT %s FROM (%s) subquery' % (
                     ', '.join(sub_selects),
                     ' '.join(result),
                 ), sub_params + params