diff --git a/src/slic3r/GUI/Tab.cpp b/src/slic3r/GUI/Tab.cpp
index 11e4f25100..a2199d5a2f 100644
--- a/src/slic3r/GUI/Tab.cpp
+++ b/src/slic3r/GUI/Tab.cpp
@@ -2717,6 +2717,16 @@ void TabPrinter::update_pages()
     rebuild_page_tree();
 }
 
+void TabPrinter::reload_config()
+{
+    Tab::reload_config();
+
+    // "extruders_count" doesn't update from the update_config(),
+    // so update it implicitly
+    if (m_active_page && m_active_page->title() == "General")
+        m_active_page->set_value("extruders_count", int(m_extruders_count));
+}
+
 void TabPrinter::activate_selected_page(std::function<void()> throw_if_canceled)
 {
     Tab::activate_selected_page(throw_if_canceled);
diff --git a/src/slic3r/GUI/Tab.hpp b/src/slic3r/GUI/Tab.hpp
index 8c00f825c2..8b73b61be3 100644
--- a/src/slic3r/GUI/Tab.hpp
+++ b/src/slic3r/GUI/Tab.hpp
@@ -465,6 +465,7 @@ public:
 	void		build_print_host_upload_group(Page* page);
     void		build_fff();
     void		build_sla();
+	void		reload_config() override;
 	void		activate_selected_page(std::function<void()> throw_if_canceled) override;
 	void		clear_pages() override;
 	void		toggle_options() override;