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-rw-r--r--src/buildstream/element.py1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/buildstream/element.py b/src/buildstream/element.py
index a60546084..25fcccd5f 100644
--- a/src/buildstream/element.py
+++ b/src/buildstream/element.py
@@ -1220,6 +1220,7 @@ class Element(Plugin):
# key is not available yet.
if self.__can_query_cache_callback is not None:
self.__can_query_cache_callback(self)
+ self.__can_query_cache_callback = None
return