diff --git a/xmlhelp/source/cxxhelp/provider/resultsetforquery.cxx b/xmlhelp/source/cxxhelp/provider/resultsetforquery.cxx
index 07cbdb15b6e6..cbeeed2f4159 100644
--- a/xmlhelp/source/cxxhelp/provider/resultsetforquery.cxx
+++ b/xmlhelp/source/cxxhelp/provider/resultsetforquery.cxx
@@ -113,7 +113,7 @@ ResultSetForQuery::ResultSetForQuery( const uno::Reference< uno::XComponentConte
     }
 
     std::vector< OUString > aCompleteResultVector;
-    OUString scope = aURLParameter.get_scope();
+    const OUString& scope = aURLParameter.get_scope();
     bool bCaptionsOnly = scope == "Heading";
     sal_Int32 hitCount = aURLParameter.get_hitCount();
 
@@ -297,7 +297,7 @@ ResultSetForQuery::ResultSetForQuery( const uno::Reference< uno::XComponentConte
     int nResultCount = aCompleteResultVector.size();
     for( int r = 0 ; r < nResultCount ; ++r )
     {
-        OUString aURL = aCompleteResultVector[r];
+        const OUString& aURL = aCompleteResultVector[r];
         OUString aResultStr = replWith + aURL.subView(replIdx);
         m_aPath.push_back( aResultStr );
     }
diff --git a/xmloff/source/chart/SchXMLAxisContext.cxx b/xmloff/source/chart/SchXMLAxisContext.cxx
index 4e118e81c72c..626da82c6fdb 100644
--- a/xmloff/source/chart/SchXMLAxisContext.cxx
+++ b/xmloff/source/chart/SchXMLAxisContext.cxx
@@ -293,7 +293,7 @@ Reference< chart2::XAxis > lcl_getAxis( const Reference< frame::XModel >& xChart
             sal_Int32 nCooSysIndex = 0;
             if( nCooSysIndex < aCooSysSeq.getLength() )
             {
-                Reference< chart2::XCoordinateSystem > xCooSys( aCooSysSeq[nCooSysIndex] );
+                const Reference< chart2::XCoordinateSystem >& xCooSys( aCooSysSeq[nCooSysIndex] );
                 if( xCooSys.is() && nDimensionIndex < xCooSys->getDimension() )
                 {
                     const sal_Int32 nMaxAxisIndex = xCooSys->getMaximumAxisIndexByDimension(nDimensionIndex);
@@ -499,7 +499,7 @@ void SchXMLAxisContext::CreateAxis()
                                 if( aCooSysSeq.hasElements() )
                                 {
                                     bool bSwapXandYAxis = false;
-                                    Reference< chart2::XCoordinateSystem > xCooSys( aCooSysSeq[0] );
+                                    const Reference< chart2::XCoordinateSystem >& xCooSys( aCooSysSeq[0] );
                                     Reference< beans::XPropertySet > xCooSysProp( xCooSys, uno::UNO_QUERY );
                                     if( xCooSysProp.is() && ( xCooSysProp->getPropertyValue(u"SwapXAndYAxis"_ustr) >>= bSwapXandYAxis )
                                         && bSwapXandYAxis )
@@ -675,7 +675,7 @@ void SchXMLAxisContext::CorrectAxisPositions( const Reference< chart2::XChartDoc
         uno::Sequence< Reference< chart2::XCoordinateSystem > > aCooSysSeq( xCooSysCnt->getCoordinateSystems());
         if( aCooSysSeq.hasElements() )
         {
-            Reference< chart2::XCoordinateSystem > xCooSys( aCooSysSeq[0] );
+            const Reference< chart2::XCoordinateSystem >& xCooSys( aCooSysSeq[0] );
             if( xCooSys.is() )
             {
                 Reference< chart2::XAxis > xMainXAxis = lcl_getAxis( xCooSys, 0, 0 );
diff --git a/xmloff/source/chart/SchXMLPlotAreaContext.cxx b/xmloff/source/chart/SchXMLPlotAreaContext.cxx
index 4ace40238e47..373c355141a1 100644
--- a/xmloff/source/chart/SchXMLPlotAreaContext.cxx
+++ b/xmloff/source/chart/SchXMLPlotAreaContext.cxx
@@ -158,7 +158,7 @@ SchXMLPlotAreaContext::SchXMLPlotAreaContext(
     m_rbHasRangeAtPlotArea = false;
 
     // get Diagram
-    uno::Reference< chart::XChartDocument > xDoc = rImpHelper.GetChartDocument();
+    const uno::Reference< chart::XChartDocument >& xDoc = rImpHelper.GetChartDocument();
     if( xDoc.is())
     {
         mxDiagram = xDoc->getDiagram();
diff --git a/xmloff/source/chart/SchXMLTools.cxx b/xmloff/source/chart/SchXMLTools.cxx
index c71867a25613..2cda1e39c5a2 100644
--- a/xmloff/source/chart/SchXMLTools.cxx
+++ b/xmloff/source/chart/SchXMLTools.cxx
@@ -466,7 +466,7 @@ void CreateCategories(
                     aCooSysSeq( xCooSysCnt->getCoordinateSystems());
                 if( nCooSysIndex < aCooSysSeq.getLength())
                 {
-                    uno::Reference< chart2::XCoordinateSystem > xCooSys( aCooSysSeq[nCooSysIndex] );
+                    const uno::Reference< chart2::XCoordinateSystem >& xCooSys( aCooSysSeq[nCooSysIndex] );
                     SAL_WARN_IF( !xCooSys.is(), "xmloff.chart", "xCooSys is NULL");
                     if( nDimensionIndex < xCooSys->getDimension() )
                     {
diff --git a/xmloff/source/core/xmlexp.cxx b/xmloff/source/core/xmlexp.cxx
index 587700619976..2cec3eb32f89 100644
--- a/xmloff/source/core/xmlexp.cxx
+++ b/xmloff/source/core/xmlexp.cxx
@@ -1903,7 +1903,7 @@ OUString SvXMLExport::AddEmbeddedXGraphic(uno::Reference<graphic::XGraphic> cons
     OUString sURL;
 
     Graphic aGraphic(rxGraphic);
-    OUString aOriginURL = aGraphic.getOriginURL();
+    const OUString& aOriginURL = aGraphic.getOriginURL();
 
     if (!aOriginURL.isEmpty())
     {
diff --git a/xmloff/source/text/txtflde.cxx b/xmloff/source/text/txtflde.cxx
index b7172fb46e6c..67f5a9ce2412 100644
--- a/xmloff/source/text/txtflde.cxx
+++ b/xmloff/source/text/txtflde.cxx
@@ -2919,7 +2919,7 @@ bool XMLTextFieldExport::GetDependentFieldPropertySet(
     if (aFields.hasElements())
     {
         // get first one and return
-        Reference<XDependentTextField> xTField = aFields[0];
+        const Reference<XDependentTextField>& xTField = aFields[0];
         xField.set(xTField, UNO_QUERY);
         DBG_ASSERT(xField.is(),
                   "Surprisingly, this TextField refuses to be a PropertySet!");