diff --git a/src/aare/beamline_dispatch/x10sa/beamline_dispatch.py b/src/aare/beamline_dispatch/x10sa/beamline_dispatch.py
index 4847a051..e759557d 100644
--- a/src/aare/beamline_dispatch/x10sa/beamline_dispatch.py
+++ b/src/aare/beamline_dispatch/x10sa/beamline_dispatch.py
@@ -87,9 +87,7 @@ class _1dModel(BeamCenterModel):
     def predict(
         self, det_z_mm: ArrayLike, det_y_mm: ArrayLike
     ) -> tuple[NDArray[np.float64], NDArray[np.float64]]:
-        y_offset_mm: float = det_y_mm - 62  # type: ignore
-        y_offset_um = y_offset_mm * 1000
-        y_offset_px = y_offset_um / 75
+        y_offset_px = (det_y_mm * 1000.0) / 75
         return (
             np.asarray([self._x_fit[1] + self._x_fit[0] * det_z_mm]),
             # positive offset means detector height increased -> beam lower on image -> higher pixel number
diff --git a/tests/unit/utils/test_beamline_dispatch.py b/tests/unit/utils/test_beamline_dispatch.py
index ad745adc..49357794 100644
--- a/tests/unit/utils/test_beamline_dispatch.py
+++ b/tests/unit/utils/test_beamline_dispatch.py
@@ -44,7 +44,7 @@ def test_pxii_dispatch_can_be_instantiated():
 def test_pxii_dispatch_beam_center():
     with patch.dict("os.environ", {"BEAMLINE": "X10SA"}):
         dispatch = get_beamline_dispatch()
-        beam_center = dispatch.geo.beam_centre_model.predict(300, 62)
+        beam_center = dispatch.geo.beam_centre_model.predict(300, 0)
         assert np.isclose(beam_center[0][0], 2081.8, atol=1)
         assert np.isclose(beam_center[1][0], 2242.05, atol=1)