diff --git a/src/slic3r/GUI/MsgDialog.cpp b/src/slic3r/GUI/MsgDialog.cpp
index 677c11a59d..f85831cfa2 100644
--- a/src/slic3r/GUI/MsgDialog.cpp
+++ b/src/slic3r/GUI/MsgDialog.cpp
@@ -413,7 +413,7 @@ int RichMessageDialog::ShowModal()
     }
     Layout();
 
-    return wxDialog::ShowModal();
+    return MsgDialog::ShowModal();
 }
 
 bool RichMessageDialog::IsCheckBoxChecked() const
diff --git a/src/slic3r/GUI/UnsavedChangesDialog.cpp b/src/slic3r/GUI/UnsavedChangesDialog.cpp
index 28ae365402..b05bfcc703 100644
--- a/src/slic3r/GUI/UnsavedChangesDialog.cpp
+++ b/src/slic3r/GUI/UnsavedChangesDialog.cpp
@@ -827,7 +827,7 @@ inline int UnsavedChangesDialog::ShowModal()
         m_exit_action = Action(result);
         return 0;
     }
-    int r = wxDialog::ShowModal();
+    int r = DPIDialog::ShowModal();
     if (r != wxID_CANCEL && dynamic_cast<::CheckBox*>(FindWindowById(wxID_APPLY))->GetValue()) {
         wxGetApp().app_config->set(choise_key, std::to_string(int(m_exit_action)));
     }