Fix forward declaration.

1 files changed, 1 insertions, 1 deletions

diff --git a/searchcore/src/tests/proton/documentdb/lid_space_compaction/lid_space_common.h b/searchcore/src/tests/proton/documentdb/lid_space_compaction/lid_space_common.h
index 31b245d7e72..5063aeff347 100644
--- a/searchcore/src/tests/proton/documentdb/lid_space_compaction/lid_space_common.h
+++ b/searchcore/src/tests/proton/documentdb/lid_space_compaction/lid_space_common.h
@@ -47,7 +47,7 @@ using LidPair = std::pair<uint32_t, uint32_t>;
 using LidPairVector = std::vector<LidPair>;
 struct MyHandler;
 
-namespace proton::test { class DummyDocumentSubDb; }
+namespace proton::test { struct DummyDocumentSubDb; }
 struct MyScanIterator : public IDocumentScanIterator {
     const MyHandler & _handler;
     LidVector _lids;