diff --git a/qemu/scripts/qapi.py b/qemu/scripts/qapi.py
index 03d62a12..c14ecae6 100644
--- a/qemu/scripts/qapi.py
+++ b/qemu/scripts/qapi.py
@@ -1057,8 +1057,7 @@ class QAPISchemaObjectTypeVariants(object):
             assert self.tag_member in seen.itervalues()
         assert isinstance(self.tag_member.type, QAPISchemaEnumType)
         for v in self.variants:
-            vseen = dict(seen)
-            v.check(schema, self.tag_member.type, vseen)
+            v.check(schema, self.tag_member.type, {})
 
 class QAPISchemaObjectTypeVariant(QAPISchemaObjectTypeMember):
     def __init__(self, name, typ):