Index: Ringtoets/Piping/src/Ringtoets.Piping.Plugin/PipingPlugin.cs
===================================================================
diff -u -r429c5e44a8ade2b6261e42c334335fed974a222e -r78cefac691d7903de48ac90c09b1e5d815b89272
--- Ringtoets/Piping/src/Ringtoets.Piping.Plugin/PipingPlugin.cs	(.../PipingPlugin.cs)	(revision 429c5e44a8ade2b6261e42c334335fed974a222e)
+++ Ringtoets/Piping/src/Ringtoets.Piping.Plugin/PipingPlugin.cs	(.../PipingPlugin.cs)	(revision 78cefac691d7903de48ac90c09b1e5d815b89272)
@@ -120,7 +120,7 @@
                 Category = RingtoetsCommonFormsResources.Ringtoets_Category,
                 Image = PipingFormsResources.PipingSurfaceLineIcon,
                 FileFilterGenerator = PipingSurfaceLineFileFilter,
-                IsEnabled = context => HasReferenceLine(context.AssessmentSection),
+                IsEnabled = context => HasGeometry(context.AssessmentSection.ReferenceLine),
                 CreateFileImporter = (context, filePath) => new SurfaceLinesCsvImporter<PipingSurfaceLine>(
                     context.WrappedData,
                     filePath,
@@ -135,7 +135,7 @@
                 Category = RingtoetsCommonFormsResources.Ringtoets_Category,
                 Image = PipingFormsResources.PipingSoilProfileIcon,
                 FileFilterGenerator = StochasticSoilModelFileFilter,
-                IsEnabled = context => HasReferenceLine(context.AssessmentSection),
+                IsEnabled = context => HasGeometry(context.AssessmentSection.ReferenceLine),
                 CreateFileImporter = (context, filePath) => new StochasticSoilModelImporter<PipingStochasticSoilModel>(
                     context.WrappedData,
                     filePath,
@@ -414,9 +414,9 @@
             return !changeHandler.RequireConfirmation() || changeHandler.InquireConfirmation();
         }
 
-        private static bool HasReferenceLine(IAssessmentSection assessmentSection)
+        private static bool HasGeometry(ReferenceLine referenceLine)
         {
-            return assessmentSection.ReferenceLine.Points.Any();
+            return referenceLine.Points.Any();
         }
 
         #region PipingFailureMechanismView ViewInfo