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-rw-r--r--comphelper/source/property/ChainablePropertySet.cxx1
-rw-r--r--comphelper/source/property/MasterPropertySet.cxx1
2 files changed, 2 insertions, 0 deletions
diff --git a/comphelper/source/property/ChainablePropertySet.cxx b/comphelper/source/property/ChainablePropertySet.cxx
index 7c9caa17582a..0805afe72bcf 100644
--- a/comphelper/source/property/ChainablePropertySet.cxx
+++ b/comphelper/source/property/ChainablePropertySet.cxx
@@ -23,6 +23,7 @@
#include <memory>
+#include <optional>
using namespace ::comphelper;
using namespace ::com::sun::star;
diff --git a/comphelper/source/property/MasterPropertySet.cxx b/comphelper/source/property/MasterPropertySet.cxx
index 51fdd4deb620..922a4c1c69b4 100644
--- a/comphelper/source/property/MasterPropertySet.cxx
+++ b/comphelper/source/property/MasterPropertySet.cxx
@@ -27,6 +27,7 @@
#include <memory>
#include <vector>
+#include <optional>
namespace {