diff --git a/resources/extruders/lotmaxx_sc10_extruder_0.json b/resources/extruders/lotmaxx_sc10_extruder_0.def.json
similarity index 100%
rename from resources/extruders/lotmaxx_sc10_extruder_0.json
rename to resources/extruders/lotmaxx_sc10_extruder_0.def.json
diff --git a/resources/extruders/lotmaxx_sc20_extruder_0.json b/resources/extruders/lotmaxx_sc20_extruder_0.def.json
similarity index 100%
rename from resources/extruders/lotmaxx_sc20_extruder_0.json
rename to resources/extruders/lotmaxx_sc20_extruder_0.def.json