diff --git a/MDANSE_GUI/Src/MDANSE_GUI/Tabs/Models/PlottingContext.py b/MDANSE_GUI/Src/MDANSE_GUI/Tabs/Models/PlottingContext.py
index 14b0b1f222..5ea30bc5ed 100644
--- a/MDANSE_GUI/Src/MDANSE_GUI/Tabs/Models/PlottingContext.py
+++ b/MDANSE_GUI/Src/MDANSE_GUI/Tabs/Models/PlottingContext.py
@@ -212,7 +212,7 @@ def planes_vs_axis(self, axis_number: int) -> List[np.ndarray]:
                 if plane_number in self._data_limits:
                     fixed_argument = perpendicular_axis[plane_number]
                     slice_def[axis_number] = plane_number
-                    data = self._data[*slice_def]
+                    data = self._data[tuple(slice_def)]
                     self._planes[plane_number] = data
                     self._plane_labels[plane_number] = (
                         f"{perpendicular_axis_name}={fixed_argument}"
@@ -220,7 +220,7 @@ def planes_vs_axis(self, axis_number: int) -> List[np.ndarray]:
             else:
                 fixed_argument = perpendicular_axis[plane_number]
                 slice_def[axis_number] = plane_number
-                data = self._data[*slice_def]
+                data = self._data[tuple(slice_def)]
                 self._planes[plane_number] = data
                 self._plane_labels[plane_number] = (
                     f"{perpendicular_axis_name}={fixed_argument}"
diff --git a/MDANSE_GUI/pyproject.toml b/MDANSE_GUI/pyproject.toml
index 188737a3e8..0cf14fc9ad 100644
--- a/MDANSE_GUI/pyproject.toml
+++ b/MDANSE_GUI/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "MDANSE_GUI"
-version = "0.1.0b1"
+version = "0.1.0b2"
 description = 'MDANSE GUI package - the graphical interface for MDANSE'
 readme = "README.md"
 requires-python = ">=3.9"