diff --git a/src/libslic3r/Preset.cpp b/src/libslic3r/Preset.cpp
index 47aff8647b..7fe93e151f 100644
--- a/src/libslic3r/Preset.cpp
+++ b/src/libslic3r/Preset.cpp
@@ -456,7 +456,7 @@ static std::vector<std::string> s_Preset_print_options {
     "ooze_prevention", "standby_temperature_delta", "interface_shells", "extrusion_width", "first_layer_extrusion_width",
     "perimeter_extrusion_width", "external_perimeter_extrusion_width", "infill_extrusion_width", "solid_infill_extrusion_width",
     "top_infill_extrusion_width", "support_material_extrusion_width", "infill_overlap", "infill_anchor", "infill_anchor_max", "bridge_flow_ratio",
-    "elefant_foot_compensation", "xy_size_compensation", "threads", "resolution", "gcode_resolution", "arc_fitting", "arc_fitting_tolerance",
+    "elefant_foot_compensation", "xy_size_compensation", "resolution", "gcode_resolution", "arc_fitting", "arc_fitting_tolerance",
     "wipe_tower", "wipe_tower_x", "wipe_tower_y",
     "wipe_tower_width", "wipe_tower_cone_angle", "wipe_tower_rotation_angle", "wipe_tower_brim_width", "wipe_tower_bridging", "single_extruder_multi_material_priming", "mmu_segmented_region_max_width",
     "mmu_segmented_region_interlocking_depth", "wipe_tower_extruder", "wipe_tower_no_sparse_layers", "wipe_tower_extra_spacing", "compatible_printers", "compatible_printers_condition", "inherits",
diff --git a/src/libslic3r/PrintConfig.cpp b/src/libslic3r/PrintConfig.cpp
index 334eb9bb82..eb804ba334 100644
--- a/src/libslic3r/PrintConfig.cpp
+++ b/src/libslic3r/PrintConfig.cpp
@@ -3068,18 +3068,6 @@ void PrintConfigDef::init_fff_params()
     def->mode = comAdvanced;
     def->set_default_value(new ConfigOptionBool(true));
 
-    def = this->add("threads", coInt);
-    def->label = L("Threads");
-    def->tooltip = L("Threads are used to parallelize long-running tasks. Optimal threads number "
-                   "is slightly above the number of available cores/processors.");
-    def->readonly = true;
-    def->min = 1;
-    {
-        int threads = (unsigned int)boost::thread::hardware_concurrency();
-        def->set_default_value(new ConfigOptionInt(threads > 0 ? threads : 2));
-        def->cli = ConfigOptionDef::nocli;
-    }
-
     def = this->add("toolchange_gcode", coString);
     def->label = L("Tool change G-code");
     def->tooltip = L("This custom code is inserted before every toolchange. Placeholder variables for all PrusaSlicer settings "