Index: Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.Plugin/MacroStabilityInwardsPlugin.cs
===================================================================
diff -u -r89a30d666e2e684db9d72ed16c3be18a6afad391 -r6b8f6422c0a6f96f8e563bb6afb82a7a192142b4
--- Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.Plugin/MacroStabilityInwardsPlugin.cs	(.../MacroStabilityInwardsPlugin.cs)	(revision 89a30d666e2e684db9d72ed16c3be18a6afad391)
+++ Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.Plugin/MacroStabilityInwardsPlugin.cs	(.../MacroStabilityInwardsPlugin.cs)	(revision 6b8f6422c0a6f96f8e563bb6afb82a7a192142b4)
@@ -686,7 +686,7 @@
             };
         }
 
-        private static IList GetInputs(MacroStabilityInwardsFailureMechanism failureMechanism, IAssessmentSection assessmentSection)
+        private static IEnumerable GetInputs(MacroStabilityInwardsFailureMechanism failureMechanism, IAssessmentSection assessmentSection)
         {
             return new ArrayList
             {
@@ -697,7 +697,7 @@
             };
         }
 
-        private static IList GetOutputs(MacroStabilityInwardsFailureMechanism failureMechanism)
+        private static IEnumerable GetOutputs(MacroStabilityInwardsFailureMechanism failureMechanism)
         {
             return new ArrayList
             {