diff --git a/xmsgrid/triangulate/detail/TrAutoFixFourTrianglePts.cpp b/xmsgrid/triangulate/detail/TrAutoFixFourTrianglePts.cpp
index e04135ef..27b72f72 100644
--- a/xmsgrid/triangulate/detail/TrAutoFixFourTrianglePts.cpp
+++ b/xmsgrid/triangulate/detail/TrAutoFixFourTrianglePts.cpp
@@ -119,6 +119,7 @@ void TrAutoFixFourTrianglePtsImpl::Fix(BSHP<TrTin> a_tin)
   RenumberTris();
   RemovePts();
   RemoveTris();
+  m_tin->BuildTrisAdjToPts();
 } // TrOuterTriangleDeleterImpl::Fix
 //------------------------------------------------------------------------------
 /// \brief Finds and removes the points connected to 4 triangles