diff --git a/httomo/sweep_runner/param_sweep_runner.py b/httomo/sweep_runner/param_sweep_runner.py
index 3d1d61f93..df24b6bf4 100644
--- a/httomo/sweep_runner/param_sweep_runner.py
+++ b/httomo/sweep_runner/param_sweep_runner.py
@@ -233,7 +233,7 @@ def execute_sweep(self):
             unit="value",
             ascii=True,
         )
-        for val, _ in zip(self._sweep_values, progress):
+        for val in progress:
             # Blocks are modified in-place by method wrappers, so a new block must be created
             # that contains a copy of the input data to the sweep stage
             block = ParamSweepBlock(