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-rw-r--r--buildstream/plugin.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/buildstream/plugin.py b/buildstream/plugin.py
index fc81a5940..e6a6b60fe 100644
--- a/buildstream/plugin.py
+++ b/buildstream/plugin.py
@@ -194,7 +194,7 @@ class Plugin():
provenance = _yaml.node_get_provenance(node, key=member_name)
return str(provenance)
- def node_get_member(self, node, expected_type, member_name, default=None):
+ def node_get_member(self, node, expected_type, member_name, default=utils._sentinel):
"""Fetch the value of a node member, raising an error if the value is
missing or incorrectly typed.