diff --git a/src/libslic3r/PrintConfig.cpp b/src/libslic3r/PrintConfig.cpp
index 9cf5dc2d6..31802e987 100644
--- a/src/libslic3r/PrintConfig.cpp
+++ b/src/libslic3r/PrintConfig.cpp
@@ -3459,7 +3459,7 @@ void PrintConfigDef::init_extruder_option_keys()
 {
     // ConfigOptionFloats, ConfigOptionPercents, ConfigOptionBools, ConfigOptionStrings
     m_extruder_option_keys = {
-        "nozzle_diameter", "min_layer_height", "max_layer_height", "extruder_offset",
+        "extruder_type", "nozzle_diameter", "min_layer_height", "max_layer_height", "extruder_offset",
         "retraction_length", "z_hop", "z_hop_types", "retraction_speed", "deretraction_speed",
         "retract_before_wipe", "retract_restart_extra", "retraction_minimum_travel", "wipe", "wipe_distance",
         "retract_when_changing_layer", "retract_length_toolchange", "retract_restart_extra_toolchange", "extruder_colour",