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-rw-r--r--django/db/models/sql/compiler.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/django/db/models/sql/compiler.py b/django/db/models/sql/compiler.py
index f32d106def..14a727e998 100644
--- a/django/db/models/sql/compiler.py
+++ b/django/db/models/sql/compiler.py
@@ -1167,7 +1167,7 @@ class SQLUpdateCompiler(SQLCompiler):
name = field.column
if hasattr(val, 'as_sql'):
sql, params = self.compile(val)
- values.append('%s = %s' % (qn(name), sql))
+ values.append('%s = %s' % (qn(name), placeholder % sql))
update_params.extend(params)
elif val is not None:
values.append('%s = %s' % (qn(name), placeholder))