diff --git a/src/libslic3r/Preset.cpp b/src/libslic3r/Preset.cpp
index 2948a3a63..e55729f5e 100644
--- a/src/libslic3r/Preset.cpp
+++ b/src/libslic3r/Preset.cpp
@@ -2599,6 +2599,12 @@ void add_correct_opts_to_diff(const std::string &opt_key, t_config_option_keys&
     const T* opt_init = static_cast<const T*>(other.option(opt_key));
     const T* opt_cur = static_cast<const T*>(this_c.option(opt_key));
     int opt_init_max_id = opt_init->values.size() - 1;
+    if (opt_init_max_id < 0) {
+        for (int i = 0; i < int(opt_cur->values.size()); i++)
+            vec.emplace_back(opt_key + "#" + std::to_string(i));
+        return;
+    }
+
     for (int i = 0; i < int(opt_cur->values.size()); i++)
     {
         int init_id = i <= opt_init_max_id ? i : 0;
diff --git a/src/slic3r/GUI/UnsavedChangesDialog.cpp b/src/slic3r/GUI/UnsavedChangesDialog.cpp
index 1268d9382..b2b30d5d3 100644
--- a/src/slic3r/GUI/UnsavedChangesDialog.cpp
+++ b/src/slic3r/GUI/UnsavedChangesDialog.cpp
@@ -1366,6 +1366,9 @@ static wxString get_string_value(std::string opt_key, const DynamicPrintConfig&
         else if (opt_key == "thumbnail_size") {
             return get_thumbnails_string(config.option<ConfigOptionPoints>(opt_key)->values);
         }
+        else if (opt_key == "head_wrap_detect_zone") {
+            return get_thumbnails_string(config.option<ConfigOptionPoints>(opt_key)->values);
+        }
         Vec2d val = config.opt<ConfigOptionPoints>(opt_key)->get_at(opt_idx);
         return from_u8((boost::format("[%1%]") % ConfigOptionPoint(val).serialize()).str());
     }