diff --git a/src/pairs/sim/simulation.py b/src/pairs/sim/simulation.py
index 67899b1681d943a2ed99add2de750a45f375bf3f..37726abd2bf569cf6a4a3ec69a58df238ec19176 100644
--- a/src/pairs/sim/simulation.py
+++ b/src/pairs/sim/simulation.py
@@ -222,7 +222,7 @@ class Simulation:
 
     def build_neighbor_lists(self, spacing):
         self.cell_lists = CellLists(self, self._dom_part, spacing, spacing)
-        self.neighbor_lists = NeighborLists(self.cell_lists)
+        self.neighbor_lists = NeighborLists(self, self.cell_lists)
         return self.neighbor_lists
 
     def compute(self, func, cutoff_radius=None, symbols={}, pre_step=False, skip_first=False):