Index: Application/Ringtoets/src/Application.Ringtoets.Storage/Read/Piping/PipingSoilProfileEntityReadExtensions.cs
===================================================================
diff -u -ra096cb901099c85dbaafa2dba6c69288464c248e -r8c6f5442c5e135d2ef3a67161b7d4d5c24fb21a2
--- Application/Ringtoets/src/Application.Ringtoets.Storage/Read/Piping/PipingSoilProfileEntityReadExtensions.cs	(.../PipingSoilProfileEntityReadExtensions.cs)	(revision a096cb901099c85dbaafa2dba6c69288464c248e)
+++ Application/Ringtoets/src/Application.Ringtoets.Storage/Read/Piping/PipingSoilProfileEntityReadExtensions.cs	(.../PipingSoilProfileEntityReadExtensions.cs)	(revision 8c6f5442c5e135d2ef3a67161b7d4d5c24fb21a2)
@@ -40,9 +40,13 @@
         /// <param name="collector">The object keeping track of read operations.</param>
         /// <returns>A new <see cref="PipingSoilProfile"/> or one from the <paramref name="collector"/> if the 
         /// <see cref="PipingSoilProfileEntity"/> has been read before.</returns>
-        /// <exception cref="ArgumentNullException">Thrown when <paramref name="collector"/> is <c>null</c>.</exception>
-        internal static PipingSoilProfile Read(this PipingSoilProfileEntity entity, ReadConversionCollector collector)
+        /// <exception cref="ArgumentNullException">Thrown when any input parameter is <c>null</c>.</exception>
+        public static PipingSoilProfile Read(this PipingSoilProfileEntity entity, ReadConversionCollector collector)
         {
+            if (entity == null)
+            {
+                throw new ArgumentNullException(nameof(entity));
+            }
             if (collector == null)
             {
                 throw new ArgumentNullException(nameof(collector));