1 files changed, 5 insertions, 1 deletions
diff --git a/src/DumpVar.c b/src/DumpVar.c
index 11e69dc..65f13be 100644
--- a/src/DumpVar.c
+++ b/src/DumpVar.c
@@ -570,7 +570,11 @@ static void AddCommonAttributes (const cGH *GH, const ioRequest *request,
   name = CCTK_GroupNameFromVarI (request->vindex);
   FLEXIO_ERROR (IOwriteAttribute (file, "groupname", CHAR,
                                   strlen (name) + 1, name));
-  coord_system_handle = Coord_GroupSystem (GH, name);
+  coord_system_handle = -1;
+  if (CCTK_IsFunctionAliased ("Coord_GroupSystem"))
+  {
+    coord_system_handle = Coord_GroupSystem (GH, name);
+  }
   free (name);
 
   itmp[0] = CCTK_GroupTypeFromVarI (request->vindex);