diff --git a/src/edt/edt/edtPCellParametersPage.cc b/src/edt/edt/edtPCellParametersPage.cc
index d68c0b319..afbf327f6 100644
--- a/src/edt/edt/edtPCellParametersPage.cc
+++ b/src/edt/edt/edtPCellParametersPage.cc
@@ -706,6 +706,13 @@ PCellParametersPage::parameter_changed ()
   dm_parameter_changed ();
 }
 
+void
+PCellParametersPage::deleteLater ()
+{
+  dm_parameter_changed.cancel ();
+  QFrame::deleteLater ();
+}
+
 void
 PCellParametersPage::do_parameter_changed ()
 {
diff --git a/src/edt/edt/edtPCellParametersPage.h b/src/edt/edt/edtPCellParametersPage.h
index a6c862452..c976dc254 100644
--- a/src/edt/edt/edtPCellParametersPage.h
+++ b/src/edt/edt/edtPCellParametersPage.h
@@ -139,6 +139,11 @@ public:
    */
   void set_parameters (const  std::vector<tl::Variant> &values);
 
+  /**
+   *  @brief Reimplementation of deleteLater
+   */
+  void deleteLater ();
+
 signals:
   void edited ();