diff --git a/src/slic3r/GUI/Widgets/FanControl.cpp b/src/slic3r/GUI/Widgets/FanControl.cpp
index 624bf1417e..49b9b09cf5 100644
--- a/src/slic3r/GUI/Widgets/FanControl.cpp
+++ b/src/slic3r/GUI/Widgets/FanControl.cpp
@@ -912,7 +912,7 @@ void FanControlPopupNew::init_names() {
 
     air_door_func_name[AIR_DOOR::AIR_DOOR_FUNC_CHAMBER] = _L("Chamber");
     air_door_func_name[AIR_DOOR::AIR_DOOR_FUNC_INNERLOOP] = _L("Innerloop");
-    air_door_func_name[AIR_DOOR::AIR_DOOR_FUNC_TOP] = _L("Top");
+    air_door_func_name[AIR_DOOR::AIR_DOOR_FUNC_TOP] = L("Top");/*UNUSED*/
 
     label_text[AIR_DUCT::AIR_DUCT_NONE] = _L("The fan controls the temperature during printing to improve print quality."
                                              "The system automatically adjusts the fan's switch and speed "