Index: Ringtoets/HydraRing/src/Ringtoets.HydraRing.Data/HydraulicBoundaryDatabase.cs
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diff -u -r20cf7c61dec992770e5e59193f1922c960341495 -r1395d3e2c0a6df5b27da3a44c820ca90eab3492c
--- Ringtoets/HydraRing/src/Ringtoets.HydraRing.Data/HydraulicBoundaryDatabase.cs	(.../HydraulicBoundaryDatabase.cs)	(revision 20cf7c61dec992770e5e59193f1922c960341495)
+++ Ringtoets/HydraRing/src/Ringtoets.HydraRing.Data/HydraulicBoundaryDatabase.cs	(.../HydraulicBoundaryDatabase.cs)	(revision 1395d3e2c0a6df5b27da3a44c820ca90eab3492c)
@@ -51,7 +51,7 @@
         /// <summary>
         /// Gets the hydraulic boundary locations.
         /// </summary>
-        public ICollection<HydraulicBoundaryLocation> Locations { get; private set; }
+        public List<HydraulicBoundaryLocation> Locations { get; private set; }
 
         /// <summary>
         /// Clears all the locations from the <see cref="HydraulicBoundaryDatabase"/>.