Index: Ringtoets/Piping/src/Ringtoets.Piping.IO/PipingSoilProfileReader.cs
===================================================================
diff -u -r6e613570fb69ad93ca5fe269e6f48c8f6ceb1bab -r5d94e728b90fff0dd4a5344c0aacece1284532e0
--- Ringtoets/Piping/src/Ringtoets.Piping.IO/PipingSoilProfileReader.cs	(.../PipingSoilProfileReader.cs)	(revision 6e613570fb69ad93ca5fe269e6f48c8f6ceb1bab)
+++ Ringtoets/Piping/src/Ringtoets.Piping.IO/PipingSoilProfileReader.cs	(.../PipingSoilProfileReader.cs)	(revision 5d94e728b90fff0dd4a5344c0aacece1284532e0)
@@ -118,7 +118,12 @@
 
         public void Dispose()
         {
-            dataReader.Dispose();
+            if (dataReader != null)
+            {
+                dataReader.Close();
+                dataReader.Dispose();
+            }
+            connection.Close();
             connection.Dispose();
         }