1 files changed, 5 insertions, 6 deletions
diff --git a/chart2/source/tools/ControllerLockGuard.cxx b/chart2/source/tools/ControllerLockGuard.cxx
index 7719755e9aff..6bfe8e4a95d2 100644
--- a/chart2/source/tools/ControllerLockGuard.cxx
+++ b/chart2/source/tools/ControllerLockGuard.cxx
@@ -19,16 +19,15 @@
 
 #include <ControllerLockGuard.hxx>
 #include <ChartModel.hxx>
+#include <utility>
 
 using namespace ::com::sun::star;
 
-using ::com::sun::star::uno::Reference;
-
 namespace chart
 {
 
-ControllerLockGuardUNO::ControllerLockGuardUNO( const uno::Reference< frame::XModel >& xModel ) :
-        mxModel( xModel )
+ControllerLockGuardUNO::ControllerLockGuardUNO( rtl::Reference<::chart::ChartModel> xModel ) :
+        mxModel(std::move( xModel ))
 {
     mxModel->lockControllers();
 }
@@ -49,8 +48,8 @@ ControllerLockGuard::~ControllerLockGuard()
     mrModel.unlockControllers();
 }
 
-ControllerLockHelper::ControllerLockHelper( const Reference< frame::XModel > & xModel ) :
-        m_xModel( xModel )
+ControllerLockHelper::ControllerLockHelper( rtl::Reference<::chart::ChartModel> xModel ) :
+        m_xModel(std::move( xModel ))
 {}
 
 ControllerLockHelper::~ControllerLockHelper()