diff --git a/pyop2/types/dat.py b/pyop2/types/dat.py
index ce263575bf..3c5220d2af 100644
--- a/pyop2/types/dat.py
+++ b/pyop2/types/dat.py
@@ -797,10 +797,10 @@ def vec_context(self, access):
         :param access: Access descriptor: READ, WRITE, or RW."""
         size = self.dataset.size
         if self.dataset._apply_local_global_filter and access is not Access.WRITE:
-                self._data_filtered[:] = self._data[:size][self._data_filter]
+            self._data_filtered[:] = self._data[:size][self._data_filter]
         yield self._vec
         if self.dataset._apply_local_global_filter and access is not Access.READ:
-                self._data[:size][self._data_filter] = self._data_filtered[:]
+            self._data[:size][self._data_filter] = self._data_filtered[:]
         if access is not Access.READ:
             self.halo_valid = False