diff --git a/postprocessor.py b/postprocessor.py
index ab5e792..92d8e33 100644
--- a/postprocessor.py
+++ b/postprocessor.py
@@ -477,7 +477,10 @@ class PostProcessor(HDF5Container):
         """
         Returns the position in normalized and centered units
         """
-        pos = dset.points
+        try:
+            pos = dset.points
+        except AttributeError:
+            pos = dset["pos"]
         pos = pos - np.array(self.save.root.maps._v_attrs.center)
         return pos