diff --git a/src/libslic3r/Preset.cpp b/src/libslic3r/Preset.cpp
index af6b50215..c24033df2 100644
--- a/src/libslic3r/Preset.cpp
+++ b/src/libslic3r/Preset.cpp
@@ -1152,18 +1152,22 @@ inline t_config_option_keys deep_diff(const ConfigBase &config_this, const Confi
         if (this_opt != nullptr && other_opt != nullptr && *this_opt != *other_opt)
         {
             if (opt_key == "bed_shape" || opt_key == "thumbnails" || opt_key == "compatible_prints" || opt_key == "compatible_printers") {
+                // Scalar variable, or a vector variable, which is independent from number of extruders,
+                // thus the vector is presented to the user as a single input.
                 diff.emplace_back(opt_key);
-                continue;
-            }
-            switch (other_opt->type())
-            {
-            case coInts:    add_correct_opts_to_diff<ConfigOptionInts       >(opt_key, diff, config_other, config_this);  break;
-            case coBools:   add_correct_opts_to_diff<ConfigOptionBools      >(opt_key, diff, config_other, config_this);  break;
-            case coFloats:  add_correct_opts_to_diff<ConfigOptionFloats     >(opt_key, diff, config_other, config_this);  break;
-            case coStrings: add_correct_opts_to_diff<ConfigOptionStrings    >(opt_key, diff, config_other, config_this);  break;
-            case coPercents:add_correct_opts_to_diff<ConfigOptionPercents   >(opt_key, diff, config_other, config_this);  break;
-            case coPoints:  add_correct_opts_to_diff<ConfigOptionPoints     >(opt_key, diff, config_other, config_this);  break;
-            default:        diff.emplace_back(opt_key);     break;
+            } else if (opt_key == "default_filament_profile") {
+                // Ignore this field, it is not presented to the user, therefore showing a "modified" flag for this parameter does not help.
+                // Also the length of this field may differ, which may lead to a crash if the block below is used.
+            } else {
+                switch (other_opt->type()) {
+                case coInts:    add_correct_opts_to_diff<ConfigOptionInts       >(opt_key, diff, config_other, config_this);  break;
+                case coBools:   add_correct_opts_to_diff<ConfigOptionBools      >(opt_key, diff, config_other, config_this);  break;
+                case coFloats:  add_correct_opts_to_diff<ConfigOptionFloats     >(opt_key, diff, config_other, config_this);  break;
+                case coStrings: add_correct_opts_to_diff<ConfigOptionStrings    >(opt_key, diff, config_other, config_this);  break;
+                case coPercents:add_correct_opts_to_diff<ConfigOptionPercents   >(opt_key, diff, config_other, config_this);  break;
+                case coPoints:  add_correct_opts_to_diff<ConfigOptionPoints     >(opt_key, diff, config_other, config_this);  break;
+                default:        diff.emplace_back(opt_key);     break;
+                }
             }
         }
     }
diff --git a/src/libslic3r/PresetBundle.cpp b/src/libslic3r/PresetBundle.cpp
index ae6a77139..1f1d11866 100644
--- a/src/libslic3r/PresetBundle.cpp
+++ b/src/libslic3r/PresetBundle.cpp
@@ -86,9 +86,8 @@ PresetBundle::PresetBundle() :
             preset.config.optptr(key, true);
         if (i == 0) {
             preset.config.optptr("default_print_profile", true);
-            preset.config.option<ConfigOptionStrings>("default_filament_profile", true)->values = { "" };
-        }
-        else {
+            preset.config.option<ConfigOptionStrings>("default_filament_profile", true);
+        } else {
             preset.config.optptr("default_sla_print_profile", true);
             preset.config.optptr("default_sla_material_profile", true);
         }
@@ -752,7 +751,7 @@ void PresetBundle::load_config_file_config(const std::string &name_or_path, bool
 	switch (printer_technology) {
 	case ptFFF:
 		config.option<ConfigOptionString>("default_print_profile", true);
-		config.option<ConfigOptionStrings>("default_filament_profile", true)->values.resize(num_extruders, std::string());
+        config.option<ConfigOptionStrings>("default_filament_profile", true);
 		break;
 	case ptSLA:
 		config.option<ConfigOptionString>("default_sla_print_profile", true);
diff --git a/src/libslic3r/PrintConfig.cpp b/src/libslic3r/PrintConfig.cpp
index 76bae268b..b3084f550 100644
--- a/src/libslic3r/PrintConfig.cpp
+++ b/src/libslic3r/PrintConfig.cpp
@@ -3378,6 +3378,8 @@ void DynamicPrintConfig::set_num_extruders(unsigned int num_extruders)
     const auto &defaults = FullPrintConfig::defaults();
     for (const std::string &key : print_config_def.extruder_option_keys()) {
         if (key == "default_filament_profile")
+            // Don't resize this field, as it is presented to the user at the "Dependencies" page of the Printer profile and we don't want to present
+            // empty fields there, if not defined by the system profile.
             continue;
         auto *opt = this->option(key, false);
         assert(opt != nullptr);