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-rw-r--r--sw/source/filter/ww8/ww8scan.hxx1
1 files changed, 1 insertions, 0 deletions
diff --git a/sw/source/filter/ww8/ww8scan.hxx b/sw/source/filter/ww8/ww8scan.hxx
index 66d3a651ff78..750b28252418 100644
--- a/sw/source/filter/ww8/ww8scan.hxx
+++ b/sw/source/filter/ww8/ww8scan.hxx
@@ -24,6 +24,7 @@
#include <cstddef>
#include <deque>
#include <memory>
+#include <optional>
#include <stack>
#include <unordered_map>
#include <vector>