diff --git a/View/sediment_calibration_tab.py b/View/sediment_calibration_tab.py
index 3f8e787..3ae7261 100644
--- a/View/sediment_calibration_tab.py
+++ b/View/sediment_calibration_tab.py
@@ -2620,7 +2620,8 @@ class SedimentCalibrationTab(QWidget):
                 lin_reg_compute = linregress(x[value1:value2], y[value1:value2])
                 print("lin_reg_compute ", lin_reg_compute)
 
-                stg.lin_reg = (lin_reg_compute.slope, lin_reg_compute.intercept)
+                stg.lin_reg.clear()
+                stg.lin_reg = [lin_reg_compute.slope, lin_reg_compute.intercept]
                 print("stg.lin_reg ", stg.lin_reg)
 
                 # --- Plot result of linear regression ---
@@ -2651,8 +2652,8 @@ class SedimentCalibrationTab(QWidget):
                 lin_reg_compute = linregress(x[value1:value2], y[value1:value2])
                 print("lin_reg_compute ", lin_reg_compute)
 
-                stg.lin_reg = (
-                lin_reg_compute.slope, lin_reg_compute.intercept)
+                stg.lin_reg.clear()
+                stg.lin_reg = [lin_reg_compute.slope, lin_reg_compute.intercept]
 
                 # --- Plot result of linear regression ---
                 self.axis_FCB.plot(