diff --git a/chart2/qa/extras/chart2import.cxx b/chart2/qa/extras/chart2import.cxx
index b508f3e123dd..be36047efadb 100644
--- a/chart2/qa/extras/chart2import.cxx
+++ b/chart2/qa/extras/chart2import.cxx
@@ -25,7 +25,6 @@
 
 #include <com/sun/star/util/Color.hpp>
 
-
 class Chart2ImportTest : public ChartTest
 {
 public:
@@ -413,13 +412,13 @@ void Chart2ImportTest::testPPTXSparseChartSeries()
 
     std::vector<std::vector<double> > aValues = getDataSeriesYValuesFromChartType(xCT);
     CPPUNIT_ASSERT_EQUAL(size_t(2), aValues.size());
-    CPPUNIT_ASSERT_EQUAL(0.0,  aValues[0][0]);
+    CPPUNIT_ASSERT( rtl::math::isNan( aValues[0][0] ) );
     CPPUNIT_ASSERT_EQUAL(2.5,  aValues[0][1]);
     CPPUNIT_ASSERT_EQUAL(3.5,  aValues[0][2]);
-    CPPUNIT_ASSERT_EQUAL(0.0,  aValues[0][3]);
+    CPPUNIT_ASSERT( rtl::math::isNan( aValues[0][3] ) );
     CPPUNIT_ASSERT_EQUAL(-2.4, aValues[1][0]);
-    CPPUNIT_ASSERT_EQUAL(0.0,  aValues[1][1]);
-    CPPUNIT_ASSERT_EQUAL(0.0,  aValues[1][2]);
+    CPPUNIT_ASSERT( rtl::math::isNan( aValues[1][1] ) );
+    CPPUNIT_ASSERT( rtl::math::isNan( aValues[1][2] ) );
     CPPUNIT_ASSERT_EQUAL(-2.8, aValues[1][3]);
 }
 
@@ -1169,17 +1168,17 @@ void Chart2ImportTest::testInternalDataProvider() {
     // Parse empty first and last
     xDataSeq = rxDataProvider->createDataSequenceByValueArray("values-y", "{\"\";42;42;\"\"}");
     xSequence = xDataSeq->getData();
-    CPPUNIT_ASSERT_EQUAL(uno::Any(sal_Int32(0)),  xSequence[0]);
+    CPPUNIT_ASSERT( rtl::math::isNan( *static_cast<const double*>(xSequence[0].getValue())));
     CPPUNIT_ASSERT_EQUAL(uno::Any(sal_Int32(42)), xSequence[1]);
     CPPUNIT_ASSERT_EQUAL(uno::Any(sal_Int32(42)), xSequence[2]);
-    CPPUNIT_ASSERT_EQUAL(uno::Any(sal_Int32(0)),  xSequence[3]);
+    CPPUNIT_ASSERT( rtl::math::isNan( *static_cast<const double*>(xSequence[3].getValue())));
 
     // Parse empty middle
     xDataSeq = rxDataProvider->createDataSequenceByValueArray("values-y", "{42;\"\";\"\";42}");
     xSequence = xDataSeq->getData();
     CPPUNIT_ASSERT_EQUAL(uno::Any(sal_Int32(42)), xSequence[0]);
-    CPPUNIT_ASSERT_EQUAL(uno::Any(sal_Int32(0)),  xSequence[1]);
-    CPPUNIT_ASSERT_EQUAL(uno::Any(sal_Int32(0)),  xSequence[2]);
+    CPPUNIT_ASSERT( rtl::math::isNan( *static_cast<const double*>(xSequence[1].getValue())) );
+    CPPUNIT_ASSERT( rtl::math::isNan( *static_cast<const double*>(xSequence[2].getValue())) );
     CPPUNIT_ASSERT_EQUAL(uno::Any(sal_Int32(42)), xSequence[3]);
 
     // Parse mixed types, numeric only role
diff --git a/chart2/source/tools/InternalDataProvider.cxx b/chart2/source/tools/InternalDataProvider.cxx
index ef6facdee058..9f5f3187fd36 100644
--- a/chart2/source/tools/InternalDataProvider.cxx
+++ b/chart2/source/tools/InternalDataProvider.cxx
@@ -573,7 +573,12 @@ InternalDataProvider::createDataSequenceFromArray( const OUString& rArrayStr, co
         std::vector<double> aValues;
         aValues.reserve(aRawElems.size());
         for (OUString & aRawElem : aRawElems)
-            aValues.push_back(aRawElem.toDouble());
+        {
+            if (aRawElem.isEmpty())
+                aValues.push_back(NAN);
+            else
+                aValues.push_back(aRawElem.toDouble());
+        }
         sal_Int32 n = m_aInternalData.appendColumn();
 
         m_aInternalData.setColumnValues(n, aValues);