diff --git a/area_reader/__init__.py b/area_reader/__init__.py
index 10a0685..4b2f3c3 100644
--- a/area_reader/__init__.py
+++ b/area_reader/__init__.py
@@ -3901,7 +3901,25 @@ def __init__(self, *args, **kwargs):
 		)
 
 	def _unstructure_enum(self, obj):
-		name = obj.name if obj.name is not None else str(obj.value)
+		# Composite Flag values have no .name before Python 3.11; decompose
+		# into single-bit member names in ascending bit order, matching the
+		# names 3.11+ produces, so JSON output is identical on every version.
+		name = obj.name
+		if name is None and isinstance(obj, enum.Flag):
+			bits = {
+				member.value: member.name
+				for member in type(obj).__members__.values()
+				if member.value and not member.value & (member.value - 1)
+			}
+			names = [bits[bit] for bit in sorted(bits) if obj.value & bit]
+			covered = 0
+			for bit in bits:
+				if obj.value & bit:
+					covered |= bit
+			if names and covered == obj.value:
+				name = "|".join(names)
+		if name is None:
+			name = str(obj.value)
 		return obj.__class__.__name__ + "." + name
 
 
diff --git a/test_jsonification.py b/test_jsonification.py
index 974bdb2..b41fcbc 100644
--- a/test_jsonification.py
+++ b/test_jsonification.py
@@ -101,14 +101,21 @@ def test_every_int_flag_type_jsonifies_zero(flag_type):
 	ids=lambda flag_type: flag_type.__name__,
 )
 def test_every_int_flag_type_jsonifies_named_combinations(flag_type):
-	members = list(flag_type)
-	if len(members) < 2:
-		pytest.skip("flag type has fewer than two iterable members")
-	value = members[0] | members[1]
+	bits = sorted(
+		{
+			member.value: member
+			for member in flag_type.__members__.values()
+			if member.value and not member.value & (member.value - 1)
+		}.values(),
+		key=lambda member: member.value,
+	)
+	if len(bits) < 2:
+		pytest.skip("flag type has fewer than two single-bit members")
+	value = bits[0] | bits[1]
 
 	result = area_reader.EnumNameConverter().unstructure(value)
 
-	assert result == f"{flag_type.__name__}.{value.name}"
+	assert result == f"{flag_type.__name__}.{bits[0].name}|{bits[1].name}"
 	assert json.loads(json.dumps(result)) == result
 
 
diff --git a/test_swr_writer.py b/test_swr_writer.py
index 28c3ef4..253b0e4 100644
--- a/test_swr_writer.py
+++ b/test_swr_writer.py
@@ -96,6 +96,8 @@ def test_swr_write_uses_the_canonical_rendering(tmp_path: Path) -> None:
 
 
 def test_fuss_fields_are_editable_declaratively(tmp_path: Path) -> None:
+	if not swr_paths():
+		pytest.skip("upstream SWR/FUSS corpus is unavailable")
 	source = load_swr(UPSTREAM_SWR / "area" / "kashyyyk")
 	mob = next(iter(source.area.mobs.values()))
 	room = next(iter(source.area.rooms.values()))