1 files changed, 12 insertions, 5 deletions
diff --git a/src/periodic.c b/src/periodic.c
index 33dbee0..1cfb274 100644
--- a/src/periodic.c
+++ b/src/periodic.c
@@ -271,15 +271,22 @@ Periodic_RegisterBC (cGH * restrict const cctkGH)
   CCTK_INT faces[6];
   CCTK_INT width[6];
   CCTK_INT ierr;
-  
+  CCTK_INT nboundaryzones[6];
+  CCTK_INT is_internal[6];
+  CCTK_INT is_staggered[6];
+  CCTK_INT shiftout[6];
+
   faces[0] = faces[1] = periodic || periodic_x;
   faces[2] = faces[3] = periodic || periodic_y;
   faces[4] = faces[5] = periodic || periodic_z;
-  
-  for (f=0; f<6; ++f) {
-    width[f] = cctkGH->cctk_nghostzones[f/2];
+
+  ierr = GetBoundarySpecification
+    (6, width, is_internal, is_staggered, shiftout);
+  if (ierr < 0)
+  {
+    CCTK_WARN (0, "Could not get the boundary specification");
   }
-  
+
   handle = SymmetryRegister ("periodic");
   if (handle < 0) {
     CCTK_WARN (0, "Could not register periodicity boundary condition");