diff --git a/CHANGELOG.md b/CHANGELOG.md
index c84d01ba..59a9e85a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -13,6 +13,7 @@ CHANGELOG for FlatCAM beta
 - cleaned up the Geometry and Gerber object classes
 - more cleanup in Isolation Plugin
 - started the work in adding to Isolation Plugin a new feature to extra isolate the pads
+- some changes due of porting to PyQt6
 
 18.08.2021
 
diff --git a/appEditors/appGCodeEditor.py b/appEditors/appGCodeEditor.py
index 1e460ea8..b3bd8611 100644
--- a/appEditors/appGCodeEditor.py
+++ b/appEditors/appGCodeEditor.py
@@ -381,7 +381,7 @@ class AppGCodeEditor(QtCore.QObject):
         :return:
         :rtype:
         """
-        flags = QtGui.QTextDocument.FindCaseSensitively
+        flags = QtGui.QTextDocument.FindFlag.FindCaseSensitively
         self.edit_area.moveCursor(QtGui.QTextCursor.MoveOperation.Start)
 
         if self.gcode_obj.options['type'].lower() == 'geometry':
diff --git a/appPlugins/ToolIsolation.py b/appPlugins/ToolIsolation.py
index 19efceec..cb33a812 100644
--- a/appPlugins/ToolIsolation.py
+++ b/appPlugins/ToolIsolation.py
@@ -1690,6 +1690,8 @@ class ToolIsolation(AppTool, Gerber):
 
                 work_geo = geometry
                 if work_geo is None:
+                    # we do isolation over all the geometry of the Gerber object
+                    # because it is already fused together
                     work_geo = isolated_obj.solid_geometry
 
                 iso_t = {