Index: DamEngine/trunk/src/Deltares.DamEngine.Data/Geometry/GeometryGenerator.cs
===================================================================
diff -u -r5498 -r5528
--- DamEngine/trunk/src/Deltares.DamEngine.Data/Geometry/GeometryGenerator.cs	(.../GeometryGenerator.cs)	(revision 5498)
+++ DamEngine/trunk/src/Deltares.DamEngine.Data/Geometry/GeometryGenerator.cs	(.../GeometryGenerator.cs)	(revision 5528)
@@ -1338,16 +1338,12 @@
             for (int index2 = index1 + 1; index2 < geometryData.Curves.Count; ++index2)
             {
                 GeometryCurve curve2 = geometryData.Curves[index2];
-                if (curve1.HeadPoint == curve2.HeadPoint && curve1.EndPoint == curve2.EndPoint)
+                if ((curve1.HeadPoint == curve2.HeadPoint && curve1.EndPoint == curve2.EndPoint) || 
+                  (curve1.HeadPoint == curve2.EndPoint && curve1.EndPoint == curve2.HeadPoint))
                 {
                     list.Add(curve2);
                     intList.Add(index2);
                 }
-                else if (curve1.HeadPoint == curve2.EndPoint && curve1.EndPoint == curve2.HeadPoint)
-                {
-                    list.Add(curve2);
-                    intList.Add(index2);
-                }
             }
         }
         foreach (GeometryCurve aCurve in list)
Index: DamEngine/trunk/src/Deltares.DamEngine.Data/Geometry/GeometryHelper.cs
===================================================================
diff -u -r5527 -r5528
--- DamEngine/trunk/src/Deltares.DamEngine.Data/Geometry/GeometryHelper.cs	(.../GeometryHelper.cs)	(revision 5527)
+++ DamEngine/trunk/src/Deltares.DamEngine.Data/Geometry/GeometryHelper.cs	(.../GeometryHelper.cs)	(revision 5528)
@@ -299,8 +299,12 @@
 
     private static bool IsCurveAnExistingCurve(GeometryCurve curve, GeometrySurface aData)
     {
-        return ((curve.SurfaceAtLeft == null ? (1) : (curve.SurfaceAtLeft == aData ? 1 : 0)) & 
-                (curve.SurfaceAtRight == null ? 1 : (curve.SurfaceAtRight == aData ? 1 : 0))) != 0;
+        if (((curve.SurfaceAtLeft == null ? (1) : (curve.SurfaceAtLeft == aData ? 1 : 0)) &
+             (curve.SurfaceAtRight == null ? 1 : (curve.SurfaceAtRight == aData ? 1 : 0))) != 0)
+        {
+            return true;
+        }
+        return false;
     }
 
     /// <summary>