diff --git a/gui/src/aaregui/panels/rotation_data_collection.py b/gui/src/aaregui/panels/rotation_data_collection.py
index 000285c1..f7359ff4 100644
--- a/gui/src/aaregui/panels/rotation_data_collection.py
+++ b/gui/src/aaregui/panels/rotation_data_collection.py
@@ -196,7 +196,8 @@ class RotationDataCollectionPanel(ScanSettingsPanel):
 
     @Slot()
     def update_omega_start(self):
-        self.start_angle.update_value(self.__omega)
+        if not self.start_angle.isReadOnly():
+            self.start_angle.force_update_value(self.__omega)
 
     def get_parameter_mappings(self):
         """Return rotation-specific parameter mappings."""