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-rw-r--r--scripts/qapi.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/scripts/qapi.py b/scripts/qapi.py
index 8f2326716c..06d7fc2848 100644
--- a/scripts/qapi.py
+++ b/scripts/qapi.py
@@ -580,7 +580,7 @@ def check_union(expr, expr_info):
# Each value must name a known type; furthermore, in flat unions,
# branches must be a struct with no overlapping member names
check_type(expr_info, "Member '%s' of union '%s'" % (key, name),
- value, allow_array=True, allow_metas=allow_metas)
+ value, allow_array=not base, allow_metas=allow_metas)
if base:
branch_struct = find_struct(value)
assert branch_struct