diff --git a/ApplicationLibCode/ProjectDataModel/Summary/RimEnsembleCurveSet.cpp b/ApplicationLibCode/ProjectDataModel/Summary/RimEnsembleCurveSet.cpp
index 4c81a581ba..50f7d2f5d8 100644
--- a/ApplicationLibCode/ProjectDataModel/Summary/RimEnsembleCurveSet.cpp
+++ b/ApplicationLibCode/ProjectDataModel/Summary/RimEnsembleCurveSet.cpp
@@ -2155,12 +2155,9 @@ QString RimEnsembleCurveSet::createAutoName() const
 {
     auto plot = firstAncestorOrThisOfTypeAsserted<RimSummaryPlot>();
 
-    QString curveSetName =
-        m_summaryAddressNameTools->curveNameY( m_yValuesSummaryAddress->address(), plot->plotTitleHelper(), plot->plotTitleHelper() );
-    if ( curveSetName.isEmpty() )
-    {
-        curveSetName = m_summaryAddressNameTools->curveNameY( m_yValuesSummaryAddress->address(), nullptr, nullptr );
-    }
+    QString curveSetName = m_summaryAddressNameTools->curveName( RiaSummaryCurveAddress( m_yValuesSummaryAddress->address() ),
+                                                                 plot->plotTitleHelper(),
+                                                                 plot->plotTitleHelper() );
 
     if ( curveSetName.isEmpty() )
     {
diff --git a/ApplicationLibCode/ProjectDataModel/Summary/RimMultipleSummaryPlotNameHelper.cpp b/ApplicationLibCode/ProjectDataModel/Summary/RimMultipleSummaryPlotNameHelper.cpp
index 7286fb86f6..0196809103 100644
--- a/ApplicationLibCode/ProjectDataModel/Summary/RimMultipleSummaryPlotNameHelper.cpp
+++ b/ApplicationLibCode/ProjectDataModel/Summary/RimMultipleSummaryPlotNameHelper.cpp
@@ -49,12 +49,12 @@ QString RimMultiSummaryPlotNameHelper::plotTitle() const
 //--------------------------------------------------------------------------------------------------
 ///
 //--------------------------------------------------------------------------------------------------
-bool RimMultiSummaryPlotNameHelper::isPlotDisplayingSingleVectorName() const
+bool RimMultiSummaryPlotNameHelper::isPlotDisplayingSingleCurveType() const
 {
     int plotCountWithSingleQuantity = 0;
     for ( auto nameHelper : m_nameHelpers )
     {
-        if ( nameHelper->isPlotDisplayingSingleVectorName() ) plotCountWithSingleQuantity++;
+        if ( nameHelper->isPlotDisplayingSingleCurveType() ) plotCountWithSingleQuantity++;
     }
 
     return plotCountWithSingleQuantity == 1;
@@ -160,7 +160,7 @@ std::string RimMultiSummaryPlotNameHelper::titleVectorName() const
 {
     for ( auto nameHelper : m_nameHelpers )
     {
-        if ( nameHelper->isPlotDisplayingSingleVectorName() ) return nameHelper->titleVectorName();
+        if ( nameHelper->isPlotDisplayingSingleCurveType() ) return nameHelper->titleVectorName();
     }
 
     return "";
diff --git a/ApplicationLibCode/ProjectDataModel/Summary/RimMultipleSummaryPlotNameHelper.h b/ApplicationLibCode/ProjectDataModel/Summary/RimMultipleSummaryPlotNameHelper.h
index 56d6ed9581..71d5c9cbb2 100644
--- a/ApplicationLibCode/ProjectDataModel/Summary/RimMultipleSummaryPlotNameHelper.h
+++ b/ApplicationLibCode/ProjectDataModel/Summary/RimMultipleSummaryPlotNameHelper.h
@@ -30,7 +30,7 @@ class RimMultiSummaryPlotNameHelper : public RimSummaryNameHelper
 
     QString plotTitle() const override;
 
-    bool isPlotDisplayingSingleVectorName() const override;
+    bool isPlotDisplayingSingleCurveType() const override;
     bool isWellNameInTitle() const override;
     bool isGroupNameInTitle() const override;
     bool isNetworkInTitle() const override;
diff --git a/ApplicationLibCode/ProjectDataModel/Summary/RimSummaryCurve.cpp b/ApplicationLibCode/ProjectDataModel/Summary/RimSummaryCurve.cpp
index b8ba4879db..92a104191b 100644
--- a/ApplicationLibCode/ProjectDataModel/Summary/RimSummaryCurve.cpp
+++ b/ApplicationLibCode/ProjectDataModel/Summary/RimSummaryCurve.cpp
@@ -600,25 +600,8 @@ QString RimSummaryCurve::createCurveAutoName()
     }
 
     RimMultiSummaryPlotNameHelper multiNameHelper( plotNameHelpers );
-    QString curveName = m_curveNameConfig->curveNameY( m_yValuesSummaryAddress->address(), currentPlotNameHelper, &multiNameHelper );
-    if ( curveName.isEmpty() )
-    {
-        curveName = m_curveNameConfig->curveNameY( m_yValuesSummaryAddress->address(), nullptr, nullptr );
-    }
-
-    {
-        QString curveNameX = m_curveNameConfig->curveNameX( m_xValuesSummaryAddress->address(), currentPlotNameHelper, &multiNameHelper );
-        if ( curveNameX.isEmpty() )
-        {
-            curveNameX = m_curveNameConfig->curveNameX( m_xValuesSummaryAddress->address(), nullptr, nullptr );
-        }
-
-        if ( !curveName.isEmpty() && !curveNameX.isEmpty() )
-        {
-            curveName += " | " + curveNameX;
-        }
-    }
 
+    QString curveName = m_curveNameConfig->curveName( curveAddress(), currentPlotNameHelper, &multiNameHelper );
     if ( curveName.isEmpty() )
     {
         curveName = "Curve Name Placeholder";
diff --git a/ApplicationLibCode/ProjectDataModel/Summary/RimSummaryCurveAutoName.cpp b/ApplicationLibCode/ProjectDataModel/Summary/RimSummaryCurveAutoName.cpp
index efce53cf2d..a11585bddf 100644
--- a/ApplicationLibCode/ProjectDataModel/Summary/RimSummaryCurveAutoName.cpp
+++ b/ApplicationLibCode/ProjectDataModel/Summary/RimSummaryCurveAutoName.cpp
@@ -65,6 +65,24 @@ RimSummaryCurveAutoName::RimSummaryCurveAutoName()
     }
 }
 
+//--------------------------------------------------------------------------------------------------
+///
+//--------------------------------------------------------------------------------------------------
+QString RimSummaryCurveAutoName::curveName( const RiaSummaryCurveAddress& summaryCurveAddress,
+                                            const RimSummaryNameHelper*   currentNameHelper,
+                                            const RimSummaryNameHelper*   plotNameHelper ) const
+{
+    QString name;
+
+    name = curveNameY( summaryCurveAddress.summaryAddressY(), currentNameHelper, plotNameHelper );
+    if ( name.isEmpty() )
+    {
+        name = curveNameY( summaryCurveAddress.summaryAddressY(), nullptr, nullptr );
+    }
+
+    return name;
+}
+
 //--------------------------------------------------------------------------------------------------
 ///
 //--------------------------------------------------------------------------------------------------
@@ -193,7 +211,7 @@ QString RimSummaryCurveAutoName::buildCurveName( const RifEclipseSummaryAddress&
 
     if ( m_vectorName || m_longVectorName )
     {
-        bool skipSubString = currentNameHelper && currentNameHelper->vectorNames().size() == 1;
+        bool skipSubString = currentNameHelper && currentNameHelper->isPlotDisplayingSingleCurveType();
         if ( !skipSubString )
         {
             if ( m_longVectorName() )
diff --git a/ApplicationLibCode/ProjectDataModel/Summary/RimSummaryCurveAutoName.h b/ApplicationLibCode/ProjectDataModel/Summary/RimSummaryCurveAutoName.h
index baaacc7c31..ca86409300 100644
--- a/ApplicationLibCode/ProjectDataModel/Summary/RimSummaryCurveAutoName.h
+++ b/ApplicationLibCode/ProjectDataModel/Summary/RimSummaryCurveAutoName.h
@@ -31,6 +31,15 @@ class RimSummaryCurveAutoName : public caf::PdmObject
 public:
     RimSummaryCurveAutoName();
 
+    QString curveName( const RiaSummaryCurveAddress& summaryCurveAddress,
+                       const RimSummaryNameHelper*   currentNameHelper,
+                       const RimSummaryNameHelper*   plotNameHelper ) const;
+
+    void applySettings( const RimSummaryCurveAutoName& other );
+
+private:
+    // friend class RimSummaryCurve;
+
     QString curveNameY( const RifEclipseSummaryAddress& summaryAddress,
                         const RimSummaryNameHelper*     currentNameHelper,
                         const RimSummaryNameHelper*     plotNameHelper ) const;
@@ -38,11 +47,6 @@ class RimSummaryCurveAutoName : public caf::PdmObject
                         const RimSummaryNameHelper*     currentNameHelper,
                         const RimSummaryNameHelper*     plotNameHelper ) const;
 
-    void applySettings( const RimSummaryCurveAutoName& other );
-
-private:
-    friend class RimSummaryCurve;
-
     void fieldChangedByUi( const caf::PdmFieldHandle* changedField, const QVariant& oldValue, const QVariant& newValue ) override;
     void defineUiOrdering( QString uiConfigName, caf::PdmUiOrdering& uiOrdering ) override;
 
diff --git a/ApplicationLibCode/ProjectDataModel/Summary/RimSummaryNameHelper.h b/ApplicationLibCode/ProjectDataModel/Summary/RimSummaryNameHelper.h
index b21d58416f..c6549fc3be 100644
--- a/ApplicationLibCode/ProjectDataModel/Summary/RimSummaryNameHelper.h
+++ b/ApplicationLibCode/ProjectDataModel/Summary/RimSummaryNameHelper.h
@@ -38,7 +38,7 @@ class RimSummaryNameHelper
 
     QString aggregatedPlotTitle( const RimSummaryNameHelper& summaryMultiPlotNameHelper ) const;
 
-    virtual bool isPlotDisplayingSingleVectorName() const = 0;
+    virtual bool isPlotDisplayingSingleCurveType() const = 0;
     virtual bool isWellNameInTitle() const                = 0;
     virtual bool isGroupNameInTitle() const               = 0;
     virtual bool isNetworkInTitle() const                 = 0;
diff --git a/ApplicationLibCode/ProjectDataModel/Summary/RimSummaryPlotNameHelper.cpp b/ApplicationLibCode/ProjectDataModel/Summary/RimSummaryPlotNameHelper.cpp
index aaaab75891..25a8076924 100644
--- a/ApplicationLibCode/ProjectDataModel/Summary/RimSummaryPlotNameHelper.cpp
+++ b/ApplicationLibCode/ProjectDataModel/Summary/RimSummaryPlotNameHelper.cpp
@@ -102,8 +102,14 @@ QString RimSummaryPlotNameHelper::plotTitle() const
 //--------------------------------------------------------------------------------------------------
 ///
 //--------------------------------------------------------------------------------------------------
-bool RimSummaryPlotNameHelper::isPlotDisplayingSingleVectorName() const
+bool RimSummaryPlotNameHelper::isPlotDisplayingSingleCurveType() const
 {
+    if ( m_analyzer->quantities().size() == 2 && m_analyzer->onlyCrossPlotCurves() )
+    {
+        // We have cross plot curves, and two quantities. This means that we have one curve.
+        return true;
+    }
+
     if ( m_analyzer->quantities().size() == 2 )
     {
         std::vector<std::string> strings;
@@ -113,6 +119,7 @@ bool RimSummaryPlotNameHelper::isPlotDisplayingSingleVectorName() const
         auto first  = RimObjectiveFunctionTools::nativeQuantityName( strings[0] );
         auto second = RimObjectiveFunctionTools::nativeQuantityName( strings[1] );
 
+        // We have two quantities, one history and one not.
         if ( first == second ) return true;
     }
 
diff --git a/ApplicationLibCode/ProjectDataModel/Summary/RimSummaryPlotNameHelper.h b/ApplicationLibCode/ProjectDataModel/Summary/RimSummaryPlotNameHelper.h
index 6f64f810c9..65de09e958 100644
--- a/ApplicationLibCode/ProjectDataModel/Summary/RimSummaryPlotNameHelper.h
+++ b/ApplicationLibCode/ProjectDataModel/Summary/RimSummaryPlotNameHelper.h
@@ -50,7 +50,7 @@ class RimSummaryPlotNameHelper : public RimSummaryNameHelper
 
     QString plotTitle() const override;
 
-    bool isPlotDisplayingSingleVectorName() const override;
+    bool isPlotDisplayingSingleCurveType() const override;
     bool isWellNameInTitle() const override;
     bool isGroupNameInTitle() const override;
     bool isNetworkInTitle() const override;