diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8eb43517..5656bb51 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -12,6 +12,7 @@ CHANGELOG for FlatCAM beta
 - adapted HPGL importer to work within the new app
 - in Gerber Editor fixed an error when using the Distance Tool with "Snap to center" option active: if clicking not on a pad Distance Tool was not working
 - updated the Turkish translation strings (by Mehmet Kaya)
+- typo fixed in Copper Thieving Tool (due of recent changes)
 
 30.10.2020
 
diff --git a/appTools/ToolCopperThieving.py b/appTools/ToolCopperThieving.py
index 7a72c521..afb22ecf 100644
--- a/appTools/ToolCopperThieving.py
+++ b/appTools/ToolCopperThieving.py
@@ -875,7 +875,7 @@ class ToolCopperThieving(AppTool):
 
             app_obj.app.proc_container.update_view_text(' %s' % _("Append source file"))
             # update the source file with the new geometry:
-            app_obj.grb_object.source_file = app_obj.f_handlers.export_gerber(
+            app_obj.grb_object.source_file = app_obj.app.f_handlers.export_gerber(
                 obj_name=app_obj.grb_object.options['name'], filename=None, local_use=app_obj.grb_object,
                 use_thread=False)
             app_obj.app.proc_container.update_view_text(' %s' % '')