1 files changed, 2 insertions, 2 deletions
diff --git a/chart2/source/tools/ExponentialRegressionCurveCalculator.cxx b/chart2/source/tools/ExponentialRegressionCurveCalculator.cxx
index 9d3f105d9b54..35c85e373ac6 100644
--- a/chart2/source/tools/ExponentialRegressionCurveCalculator.cxx
+++ b/chart2/source/tools/ExponentialRegressionCurveCalculator.cxx
@@ -185,7 +185,7 @@ OUString ExponentialRegressionCurveCalculator::ImplGetRepresentation(
         // if nValueLength not calculated then nullptr
     sal_Int32* pValueLength = nValueLength ? &nValueLength : nullptr;
     if ( m_fSign < 0.0 )
-        aTmpBuf.append( aMinusSign + " " );
+        aTmpBuf.append( OUStringLiteral1<aMinusSign>() + " " );
     if ( bHasIntercept )
     {
         OUString aValueString = getFormattedString( xNumFormatter, nNumberFormatKey, fIntercept, pValueLength );
@@ -210,7 +210,7 @@ OUString ExponentialRegressionCurveCalculator::ImplGetRepresentation(
         }
     }
     if ( m_fLogSlope < 0.0 )
-        aTmpBuf.append( aMinusSign + " " );
+        aTmpBuf.append( OUStringLiteral1<aMinusSign>() + " " );
     if ( bHasLogSlope )
     {
         OUString aValueString = getFormattedString( xNumFormatter, nNumberFormatKey, fabs(m_fLogSlope), pValueLength );