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-rw-r--r--searchcore/src/vespa/searchcore/proton/bucketdb/bucketdb.cpp1
1 files changed, 1 insertions, 0 deletions
diff --git a/searchcore/src/vespa/searchcore/proton/bucketdb/bucketdb.cpp b/searchcore/src/vespa/searchcore/proton/bucketdb/bucketdb.cpp
index e1b631a2124..c7a3103af22 100644
--- a/searchcore/src/vespa/searchcore/proton/bucketdb/bucketdb.cpp
+++ b/searchcore/src/vespa/searchcore/proton/bucketdb/bucketdb.cpp
@@ -4,6 +4,7 @@
#include "remove_batch_entry.h"
#include <cassert>
#include <algorithm>
+#include <optional>
using document::GlobalId;
using storage::spi::BucketChecksum;