diff --git a/posydon/grids/psygrid.py b/posydon/grids/psygrid.py
index 489f7400f..5c725004c 100644
--- a/posydon/grids/psygrid.py
+++ b/posydon/grids/psygrid.py
@@ -1543,6 +1543,9 @@ def load(self, filepath=None, lazy=True):
         else:
             raise KeyError("Some runs are missing from the HDF5 grid.")
 
+        # set the compression arguments
+        self._make_compression_args()
+
         self._say("\tDone.")
 
     def close(self):