diff --git a/mypy/nodes.py b/mypy/nodes.py
index 72a23d4f0789..d5ce8d675127 100644
--- a/mypy/nodes.py
+++ b/mypy/nodes.py
@@ -3915,7 +3915,7 @@ def serialize(self) -> JsonDict:
             "eq_default": self.eq_default,
             "order_default": self.order_default,
             "kw_only_default": self.kw_only_default,
-            "frozen_only_default": self.frozen_default,
+            "frozen_default": self.frozen_default,
             "field_specifiers": list(self.field_specifiers),
         }
 
diff --git a/test-data/unit/fine-grained-dataclass-transform.test b/test-data/unit/fine-grained-dataclass-transform.test
index 7dc852f1d733..3abba0892ae8 100644
--- a/test-data/unit/fine-grained-dataclass-transform.test
+++ b/test-data/unit/fine-grained-dataclass-transform.test
@@ -90,3 +90,45 @@ builtins.pyi:12: note: "B" defined here
 main:7: error: Unexpected keyword argument "y" for "B"
 builtins.pyi:12: note: "B" defined here
 ==
+
+[case frozenStays]
+# flags: --python-version 3.11
+from foo import Foo
+
+foo = Foo(base=0, foo=1)
+
+[file transform.py]
+from typing import dataclass_transform, Type
+
+@dataclass_transform(frozen_default=True)
+def dataclass(cls: Type) -> Type: return cls
+
+[file base.py]
+from transform import dataclass
+
+@dataclass
+class Base:
+    base: int
+
+[file foo.py]
+from base import Base
+from transform import dataclass
+
+@dataclass
+class Foo(Base):
+    foo: int
+
+[file foo.py.2]
+from base import Base
+from transform import dataclass
+
+@dataclass
+class Foo(Base):
+    foo: int
+    bar: int = 0
+
+[typing fixtures/typing-full.pyi]
+[builtins fixtures/dataclasses.pyi]
+
+[out]
+==