Index: Ringtoets/Piping/src/Ringtoets.Piping.Primitives/PipingSoilProfile.cs
===================================================================
diff -u -r4d2b702d8a5e4570ee53fa499f8f5fa196acdb98 -r228ee54da56eded41bf81bba88cf54371f11d2bb
--- Ringtoets/Piping/src/Ringtoets.Piping.Primitives/PipingSoilProfile.cs	(.../PipingSoilProfile.cs)	(revision 4d2b702d8a5e4570ee53fa499f8f5fa196acdb98)
+++ Ringtoets/Piping/src/Ringtoets.Piping.Primitives/PipingSoilProfile.cs	(.../PipingSoilProfile.cs)	(revision 228ee54da56eded41bf81bba88cf54371f11d2bb)
@@ -138,14 +138,13 @@
         {
             unchecked
             {
-                var hashCode = 0;
+                int hashCode = Bottom.GetHashCode();
+                hashCode = (hashCode * 397) ^ Name.GetHashCode();
+                hashCode = (hashCode * 397) ^ (int)SoilProfileSourceType;
                 foreach (PipingSoilLayer layer in layers)
                 {
                     hashCode = (hashCode * 397) ^ layer.GetHashCode();
                 }
-                hashCode = (hashCode * 397) ^ Bottom.GetHashCode();
-                hashCode = (hashCode * 397) ^ Name.GetHashCode();
-                hashCode = (hashCode * 397) ^ (int) SoilProfileSourceType;
                 return hashCode;
             }
         }