diff --git a/resources/localization/PrusaSlicer.pot b/resources/localization/PrusaSlicer.pot
index dcaace9e0..78028a691 100644
--- a/resources/localization/PrusaSlicer.pot
+++ b/resources/localization/PrusaSlicer.pot
@@ -8,7 +8,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2019-08-28 15:11+0200\n"
+"POT-Creation-Date: 2019-08-28 15:34+0200\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
@@ -880,11 +880,12 @@ msgstr ""
 msgid "Paste"
 msgstr ""
 
-#: src/slic3r/GUI/GLCanvas3D.cpp:3603
+#: src/slic3r/GUI/GLCanvas3D.cpp:3603 src/slic3r/GUI/Plater.cpp:3390
+#: src/slic3r/GUI/Plater.cpp:3402 src/slic3r/GUI/Plater.cpp:3516
 msgid "Add instance"
 msgstr ""
 
-#: src/slic3r/GUI/GLCanvas3D.cpp:3614
+#: src/slic3r/GUI/GLCanvas3D.cpp:3614 src/slic3r/GUI/Plater.cpp:3518
 msgid "Remove instance"
 msgstr ""
 
@@ -3370,33 +3371,24 @@ msgstr ""
 msgid "Cancelled"
 msgstr ""
 
-#: src/slic3r/GUI/Plater.cpp:3390 src/slic3r/GUI/Plater.cpp:3402
-#: src/slic3r/GUI/Plater.cpp:3516
-msgid "Increase copies"
-msgstr ""
-
 #: src/slic3r/GUI/Plater.cpp:3510 src/slic3r/GUI/Plater.cpp:3529
 msgid "Remove the selected object"
 msgstr ""
 
 #: src/slic3r/GUI/Plater.cpp:3516
-msgid "Place one more copy of the selected object"
+msgid "Add one more instance of the selected object"
 msgstr ""
 
 #: src/slic3r/GUI/Plater.cpp:3518
-msgid "Decrease copies"
-msgstr ""
-
-#: src/slic3r/GUI/Plater.cpp:3518
-msgid "Remove one copy of the selected object"
+msgid "Remove one instance of the selected object"
 msgstr ""
 
 #: src/slic3r/GUI/Plater.cpp:3520
-msgid "Set number of copies"
+msgid "Set number of instances"
 msgstr ""
 
 #: src/slic3r/GUI/Plater.cpp:3520
-msgid "Change the number of copies of the selected object"
+msgid "Change the number of instances of the selected object"
 msgstr ""
 
 #: src/slic3r/GUI/Plater.cpp:3539
diff --git a/src/slic3r/GUI/Plater.cpp b/src/slic3r/GUI/Plater.cpp
index af6bef8b1..c311472c7 100644
--- a/src/slic3r/GUI/Plater.cpp
+++ b/src/slic3r/GUI/Plater.cpp
@@ -3387,7 +3387,7 @@ void Plater::priv::on_right_click(Vec2dEvent& evt)
          */
         const MenuIdentifier id = printer_technology == ptSLA ? miObjectSLA : miObjectFFF;
         if (wxGetApp().get_mode() == comSimple) {
-            if (menu->FindItem(_(L("Increase copies"))) != wxNOT_FOUND)
+            if (menu->FindItem(_(L("Add instance"))) != wxNOT_FOUND)
             {
                 /* Detach an items from the menu, but don't delete them
                  * so that they can be added back later
@@ -3399,7 +3399,7 @@ void Plater::priv::on_right_click(Vec2dEvent& evt)
             }
         }
         else {
-            if (menu->FindItem(_(L("Increase copies"))) == wxNOT_FOUND)
+            if (menu->FindItem(_(L("Add instance"))) == wxNOT_FOUND)
             {
                 // Prepend items to the menu, if those aren't not there
                 menu->Prepend(items_set_number_of_copies[id]);
@@ -3513,11 +3513,11 @@ bool Plater::priv::init_common_menu(wxMenu* menu, const bool is_part/* = false*/
         sidebar->obj_list()->append_menu_item_export_stl(menu);
     }
     else {
-        wxMenuItem* item_increase = append_menu_item(menu, wxID_ANY, _(L("Increase copies")) + "\t+", _(L("Place one more copy of the selected object")),
+        wxMenuItem* item_increase = append_menu_item(menu, wxID_ANY, _(L("Add instance")) + "\t+", _(L("Add one more instance of the selected object")),
             [this](wxCommandEvent&) { q->increase_instances();      }, "add_copies",        nullptr, [this]() { return can_increase_instances(); }, q);
-        wxMenuItem* item_decrease = append_menu_item(menu, wxID_ANY, _(L("Decrease copies")) + "\t-", _(L("Remove one copy of the selected object")),
+        wxMenuItem* item_decrease = append_menu_item(menu, wxID_ANY, _(L("Remove instance")) + "\t-", _(L("Remove one instance of the selected object")),
             [this](wxCommandEvent&) { q->decrease_instances();      }, "remove_copies",     nullptr, [this]() { return can_decrease_instances(); }, q);
-        wxMenuItem* item_set_number_of_copies = append_menu_item(menu, wxID_ANY, _(L("Set number of copies")) + dots, _(L("Change the number of copies of the selected object")),
+        wxMenuItem* item_set_number_of_copies = append_menu_item(menu, wxID_ANY, _(L("Set number of instances")) + dots, _(L("Change the number of instances of the selected object")),
             [this](wxCommandEvent&) { q->set_number_of_copies();    }, "number_of_copies",  nullptr, [this]() { return can_increase_instances(); }, q);