diff --git a/src/libslic3r/PrintConfig.cpp b/src/libslic3r/PrintConfig.cpp
index 31d122cf26..d2c41e3107 100644
--- a/src/libslic3r/PrintConfig.cpp
+++ b/src/libslic3r/PrintConfig.cpp
@@ -1643,13 +1643,13 @@ void PrintConfigDef::init_fff_params()
 
     def = this->add("full_fan_speed_layer", coInts);
     def->label = L("Full fan speed at layer");
-    //def->tooltip = L("Fan speed will be ramped up linearly from zero at layer \"close_fan_the_first_x_layers\" "
-    //               "to maximum at layer \"full_fan_speed_layer\". "
-    //               "\"full_fan_speed_layer\" will be ignored if lower than \"close_fan_the_first_x_layers\", in which case "
-    //               "the fan will be running at maximum allowed speed at layer \"close_fan_the_first_x_layers\" + 1.");
+    def->tooltip = L("Fan speed will be ramped up linearly from zero at layer \"close_fan_the_first_x_layers\" "
+                  "to maximum at layer \"full_fan_speed_layer\". "
+                  "\"full_fan_speed_layer\" will be ignored if lower than \"close_fan_the_first_x_layers\", in which case "
+                  "the fan will be running at maximum allowed speed at layer \"close_fan_the_first_x_layers\" + 1.");
     def->min = 0;
     def->max = 1000;
-    def->mode = comDevelop;
+    def->mode = comAdvanced;
     def->set_default_value(new ConfigOptionInts { 0 });
 
     def = this->add("fuzzy_skin", coEnum);
diff --git a/src/slic3r/GUI/Tab.cpp b/src/slic3r/GUI/Tab.cpp
index 4b4feb1480..529c0e7870 100644
--- a/src/slic3r/GUI/Tab.cpp
+++ b/src/slic3r/GUI/Tab.cpp
@@ -2738,7 +2738,7 @@ void TabFilament::build()
         //optgroup->append_line(line);
         optgroup = page->new_optgroup(L("Cooling for specific layer"), L"param_cooling");
         optgroup->append_single_option_line("close_fan_the_first_x_layers", "auto-cooling");
-        //optgroup->append_single_option_line("full_fan_speed_layer");
+        optgroup->append_single_option_line("full_fan_speed_layer");
 
         optgroup = page->new_optgroup(L("Part cooling fan"), L"param_cooling_fan");
         line = { L("Min fan speed threshold"), L("Part cooling fan speed will start to run at min speed when the estimated layer time is no longer than the layer time in setting. When layer time is shorter than threshold, fan speed is interpolated between the minimum and maximum fan speed according to layer printing time") };