diff --git a/polytope/engine/hullslicer.py b/polytope/engine/hullslicer.py
index 8e14eeae2..0bdbddf5b 100644
--- a/polytope/engine/hullslicer.py
+++ b/polytope/engine/hullslicer.py
@@ -84,8 +84,6 @@ def _build_sliceable_child(self, polytope, ax, node, datacube, lower, upper, nex
             if flattened.get(datacube.coupled_axes[0][0], None) is not None:
                 flattened_tuple = (datacube.coupled_axes[0][0], flattened.get(datacube.coupled_axes[0][0], None))
                 flattened = {flattened_tuple[0]: flattened_tuple[1]}
-            else:
-                flattened = {}
 
         values = self.axis_values_between.get((flattened_tuple, ax.name, lower, upper, method), None)
         if self.axis_values_between.get((flattened_tuple, ax.name, lower, upper, method), None) is None: