diff --git a/ApplicationCode/ProjectDataModel/RimSummaryCurveFilter.cpp b/ApplicationCode/ProjectDataModel/RimSummaryCurveFilter.cpp
index b75f459115..ba4f1f7c92 100644
--- a/ApplicationCode/ProjectDataModel/RimSummaryCurveFilter.cpp
+++ b/ApplicationCode/ProjectDataModel/RimSummaryCurveFilter.cpp
@@ -65,6 +65,8 @@ RimSummaryCurveFilter::RimSummaryCurveFilter()
     m_selectedSummaryCases.uiCapability()->setUiChildrenHidden(true);
     m_selectedSummaryCases.uiCapability()->setUiEditorTypeName(caf::PdmUiListEditor::uiEditorTypeName());
     m_selectedSummaryCases.uiCapability()->setAutoAddingOptionFromValue(false);
+    m_selectedSummaryCases.xmlCapability()->setIOWritable(false);
+    m_selectedSummaryCases.xmlCapability()->setIOReadable(false);
 
     CAF_PDM_InitFieldNoDefault(&m_selectedVariableDisplayField, "SelectedVariableDisplayVar", "Variables", "", "", "");
     m_selectedVariableDisplayField.xmlCapability()->setIOWritable(false);