2 files changed, 3 insertions, 2 deletions
diff --git a/Carpet/CarpetLib/src/gh.cc b/Carpet/CarpetLib/src/gh.cc
index 159aa1e3d..1fa06ee2d 100644
--- a/Carpet/CarpetLib/src/gh.cc
+++ b/Carpet/CarpetLib/src/gh.cc
@@ -43,7 +43,8 @@ void gh::regrid (mregs const & regs)
   DECLARE_CCTK_PARAMETERS;
   
   // Save the old grid hierarchy
-  _oldregions = _regions;
+  _oldregions.clear ();
+  swap (_oldregions, _regions);
   _regions = regs;
   
   // Consistency checks
diff --git a/Carpet/CarpetLib/src/gh.hh b/Carpet/CarpetLib/src/gh.hh
index c48f3cd9c..619aeebf0 100644
--- a/Carpet/CarpetLib/src/gh.hh
+++ b/Carpet/CarpetLib/src/gh.hh
@@ -125,7 +125,7 @@ public:
   {
     return (int)_regions.AT(0).AT(rl).size();
   }
-
+  
   bool is_local (const int rl, const int c) const
   {
     return processor(rl,c) == dist::rank();