diff --git a/flixopt/modeling.py b/flixopt/modeling.py
index 4e368d7ae..5bee1e6ee 100644
--- a/flixopt/modeling.py
+++ b/flixopt/modeling.py
@@ -298,7 +298,7 @@ def consecutive_duration_tracking(
         # Minimum duration constraint if provided
         if minimum_duration is not None:
             constraints['lb'] = model.add_constraints(
-                duration
+                duration.isel(time=slice(None, -1))
                 >= (
                     state_variable.isel({duration_dim: slice(None, -1)})
                     - state_variable.isel({duration_dim: slice(1, None)})