diff --git a/ApplicationLibCode/Commands/EclipseCommands/RicNewFaultDistanceResultFeature.cpp b/ApplicationLibCode/Commands/EclipseCommands/RicNewFaultDistanceResultFeature.cpp
index 2c9e948726..40602aa532 100644
--- a/ApplicationLibCode/Commands/EclipseCommands/RicNewFaultDistanceResultFeature.cpp
+++ b/ApplicationLibCode/Commands/EclipseCommands/RicNewFaultDistanceResultFeature.cpp
@@ -97,7 +97,10 @@ void RicNewFaultDistanceResultFeature::onActionTriggered( bool isChecked )
     }
     else if ( eclipseView->faultCollection() )
     {
-        newResult->setSelectedFaults( eclipseView->faultCollection()->faults() );
+        // Default to all faults, but leave the ResInsight-generated faults unticked.
+        std::vector<RimFaultInView*> defaultFaults = eclipseView->faultCollection()->faults();
+        std::erase_if( defaultFaults, []( RimFaultInView* fault ) { return fault && fault->isGeneratedFault(); } );
+        newResult->setSelectedFaults( defaultFaults );
     }
 
     eclipseView->updateConnectedEditors();
diff --git a/ApplicationLibCode/ProjectDataModel/Faults/RimFaultInView.cpp b/ApplicationLibCode/ProjectDataModel/Faults/RimFaultInView.cpp
index 666625df18..db0b0580fe 100644
--- a/ApplicationLibCode/ProjectDataModel/Faults/RimFaultInView.cpp
+++ b/ApplicationLibCode/ProjectDataModel/Faults/RimFaultInView.cpp
@@ -19,6 +19,8 @@
 
 #include "RimFaultInView.h"
 
+#include "RiaResultNames.h"
+
 #include "RigFault.h"
 
 #include "RimEclipseView.h"
@@ -121,6 +123,15 @@ const RigFault* RimFaultInView::faultGeometry() const
     return m_rigFault;
 }
 
+//--------------------------------------------------------------------------------------------------
+/// True for the faults synthesized by ResInsight (undefined grid faults), as opposed to faults
+/// imported from the Eclipse model.
+//--------------------------------------------------------------------------------------------------
+bool RimFaultInView::isGeneratedFault() const
+{
+    return name() == RiaResultNames::undefinedGridFaultName() || name() == RiaResultNames::undefinedGridFaultWithInactiveName();
+}
+
 //--------------------------------------------------------------------------------------------------
 ///
 //--------------------------------------------------------------------------------------------------
diff --git a/ApplicationLibCode/ProjectDataModel/Faults/RimFaultInView.h b/ApplicationLibCode/ProjectDataModel/Faults/RimFaultInView.h
index 9dfca2aa61..b838c1568f 100644
--- a/ApplicationLibCode/ProjectDataModel/Faults/RimFaultInView.h
+++ b/ApplicationLibCode/ProjectDataModel/Faults/RimFaultInView.h
@@ -48,6 +48,8 @@ public:
     void            setFaultGeometry( const RigFault* faultGeometry );
     const RigFault* faultGeometry() const;
 
+    bool isGeneratedFault() const;
+
     caf::PdmFieldHandle* userDescriptionField() override;
     caf::PdmFieldHandle* objectToggleField() override;
 
diff --git a/ApplicationLibCode/ProjectDataModelCommands/RimcEclipseView.cpp b/ApplicationLibCode/ProjectDataModelCommands/RimcEclipseView.cpp
index 867a8b70a2..450a859ca9 100644
--- a/ApplicationLibCode/ProjectDataModelCommands/RimcEclipseView.cpp
+++ b/ApplicationLibCode/ProjectDataModelCommands/RimcEclipseView.cpp
@@ -58,7 +58,12 @@ std::expected<caf::PdmObjectHandle*, QString> RimcEclipseView_addFaultDistance::
     if ( !m_resultName().isEmpty() ) newResult->setResultName( m_resultName() );
 
     std::vector<RimFaultInView*> selected = m_faults.ptrReferencedObjectsByType();
-    if ( selected.empty() && eclipseView->faultCollection() ) selected = eclipseView->faultCollection()->faults();
+    if ( selected.empty() && eclipseView->faultCollection() )
+    {
+        // Default to all faults, but leave the ResInsight-generated faults unticked.
+        selected = eclipseView->faultCollection()->faults();
+        std::erase_if( selected, []( RimFaultInView* fault ) { return fault && fault->isGeneratedFault(); } );
+    }
 
     newResult->setSelectedFaults( selected );