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-rw-r--r--klippy/kinematics/cartesian.py3
1 files changed, 2 insertions, 1 deletions
diff --git a/klippy/kinematics/cartesian.py b/klippy/kinematics/cartesian.py
index 59604197..6d576b5b 100644
--- a/klippy/kinematics/cartesian.py
+++ b/klippy/kinematics/cartesian.py
@@ -30,7 +30,8 @@ class CartKinematics:
self.rails[3].setup_itersolve('cartesian_stepper_alloc',
dc_axis.encode())
dc_rail_0 = idex_modes.DualCarriagesRail(
- self.rails[0], axis=self.dual_carriage_axis, active=True)
+ self.rails[self.dual_carriage_axis],
+ axis=self.dual_carriage_axis, active=True)
dc_rail_1 = idex_modes.DualCarriagesRail(
self.rails[3], axis=self.dual_carriage_axis, active=False)
self.dc_module = idex_modes.DualCarriages(