diff --git a/src/slic3r/GUI/Preferences.cpp b/src/slic3r/GUI/Preferences.cpp
index 8c1b9c89e9..65d0a30f54 100644
--- a/src/slic3r/GUI/Preferences.cpp
+++ b/src/slic3r/GUI/Preferences.cpp
@@ -817,7 +817,7 @@ wxWindow* PreferencesDialog::create_general_page()
     std::vector<wxString> Regions         = {_L("Asia-Pacific"), _L("China"), _L("Europe"), _L("North America"), _L("Others")};
     auto                  item_region= create_item_region_combobox(_L("Login Region"), page, _L("Login Region"), Regions);
 
-    std::vector<wxString> Units         = {_L("Metric"), _L("Imperial")};
+    std::vector<wxString> Units         = {_L("Metric") + " (mm, g)", _L("Imperial") + " (in, oz)"};
     auto item_currency = create_item_combobox(_L("Units"), page, _L("Units"), "use_inches", Units);
 
     auto item_hints = create_item_checkbox(_L("Show \"Tip of the day\" notification after start"), page, _L("If enabled, useful hints are displayed at startup."), 50, "show_hints");