diff --git a/src/slic3r/GUI/ConfigManipulation.cpp b/src/slic3r/GUI/ConfigManipulation.cpp
index 236460dd2c..4ed1cee6fd 100644
--- a/src/slic3r/GUI/ConfigManipulation.cpp
+++ b/src/slic3r/GUI/ConfigManipulation.cpp
@@ -141,6 +141,8 @@ void ConfigManipulation::update_print_fff_config(DynamicPrintConfig* config, con
         apply(config, &new_conf);
     }
 
+    static bool support_material_overhangs_queried = false;
+
     if (config->opt_bool("support_material")) {
         // Ask only once.
         if (!support_material_overhangs_queried) {
diff --git a/src/slic3r/GUI/ConfigManipulation.hpp b/src/slic3r/GUI/ConfigManipulation.hpp
index 1dbadc2bd9..7344f758be 100644
--- a/src/slic3r/GUI/ConfigManipulation.hpp
+++ b/src/slic3r/GUI/ConfigManipulation.hpp
@@ -18,7 +18,6 @@ namespace GUI {
 class ConfigManipulation
 {
     bool                is_msg_dlg_already_exist{ false };
-    bool                support_material_overhangs_queried{ false };
 
     // function to loading of changed configuration 
     std::function<void()>                                       load_config = nullptr;