1 files changed, 1 insertions, 1 deletions
diff --git a/include/comphelper/accessibletexthelper.hxx b/include/comphelper/accessibletexthelper.hxx
index 3b633716c2b3..5a9b07e0d7d1 100644
--- a/include/comphelper/accessibletexthelper.hxx
+++ b/include/comphelper/accessibletexthelper.hxx
@@ -50,7 +50,7 @@ namespace comphelper
 
         css::uno::Reference < css::i18n::XBreakIterator > const &            implGetBreakIterator();
         css::uno::Reference < css::i18n::XCharacterClassification > const &  implGetCharacterClassification();
-        static bool                      implIsValidBoundary( css::i18n::Boundary& rBoundary, sal_Int32 nLength );
+        static bool                      implIsValidBoundary( css::i18n::Boundary const & rBoundary, sal_Int32 nLength );
         static bool                      implIsValidIndex( sal_Int32 nIndex, sal_Int32 nLength );
         static bool                      implIsValidRange( sal_Int32 nStartIndex, sal_Int32 nEndIndex, sal_Int32 nLength );
         virtual OUString                 implGetText() = 0;