Index: Ringtoets/Integration/src/Ringtoets.Integration.Plugin/RingtoetsPlugin.cs
===================================================================
diff -u -r6d67c92bda51062e3052d003885638a5b30c8575 -r6b8f6422c0a6f96f8e563bb6afb82a7a192142b4
--- Ringtoets/Integration/src/Ringtoets.Integration.Plugin/RingtoetsPlugin.cs	(.../RingtoetsPlugin.cs)	(revision 6d67c92bda51062e3052d003885638a5b30c8575)
+++ Ringtoets/Integration/src/Ringtoets.Integration.Plugin/RingtoetsPlugin.cs	(.../RingtoetsPlugin.cs)	(revision 6b8f6422c0a6f96f8e563bb6afb82a7a192142b4)
@@ -1194,7 +1194,7 @@
             };
         }
 
-        private static IList GetInputs(IFailureMechanism nodeData, IAssessmentSection assessmentSection)
+        private static IEnumerable GetInputs(IFailureMechanism nodeData, IAssessmentSection assessmentSection)
         {
             return new ArrayList
             {
@@ -1203,7 +1203,7 @@
             };
         }
 
-        private static IList GetOutputs(IFailureMechanism nodeData)
+        private static IEnumerable GetOutputs(IFailureMechanism nodeData)
         {
             var duneErosion = nodeData as IHasSectionResults<DuneErosionFailureMechanismSectionResult>;
             var grassCoverSlipOffInwards = nodeData as IHasSectionResults<GrassCoverSlipOffInwardsFailureMechanismSectionResult>;