diff --git a/src/slic3r/GUI/MainFrame.cpp b/src/slic3r/GUI/MainFrame.cpp
index 9d24531ea..a22d19c5a 100644
--- a/src/slic3r/GUI/MainFrame.cpp
+++ b/src/slic3r/GUI/MainFrame.cpp
@@ -2061,5 +2061,5 @@ void SettingsDialog::on_dpi_changed(const wxRect& suggested_rect)
 }
 
 
-} // GUI
-} // Slic3r
+} // namespace GUI
+} // namespace Slic3r