diff --git a/src/edt/edt/edtEditorOptionsPages.cc b/src/edt/edt/edtEditorOptionsPages.cc
index b3db6e5fe..7bb6e322d 100644
--- a/src/edt/edt/edtEditorOptionsPages.cc
+++ b/src/edt/edt/edtEditorOptionsPages.cc
@@ -901,6 +901,7 @@ EditorOptionsInstPCellParam::update_pcell_parameters (const std::vector <tl::Var
     this->layout ()->addWidget (mp_pcell_parameters->page_widget ());
 
     mp_pcell_parameters->set_state (pcp_state);
+    mp_pcell_parameters->edited.add (this, &EditorOptionsInstPCellParam::parameters_page_edited);
 
   } else {