diff --git a/resources/profiles/BBL.json b/resources/profiles/BBL.json
index e32a6a146..97ef32e34 100644
--- a/resources/profiles/BBL.json
+++ b/resources/profiles/BBL.json
@@ -1,7 +1,7 @@
 {
     "name": "Bambulab",
     "url": "http://www.bambulab.com/Parameters/vendor/BBL.json",
-    "version": "02.00.00.54",
+    "version": "02.00.00.55",
     "force_update": "0",
     "description": "the initial version of BBL configurations",
     "machine_model_list": [
diff --git a/resources/profiles/BBL/process/fdm_process_common.json b/resources/profiles/BBL/process/fdm_process_common.json
index ae4887f01..763107d34 100644
--- a/resources/profiles/BBL/process/fdm_process_common.json
+++ b/resources/profiles/BBL/process/fdm_process_common.json
@@ -19,6 +19,7 @@
     "default_acceleration": [
         "10000"
     ],
+    "detect_floating_vertical_shell": "1",
     "detect_overhang_wall": "1",
     "detect_thin_wall": "0",
     "draft_shield": "disabled",
diff --git a/resources/profiles/BBL/process/fdm_process_dual_common.json b/resources/profiles/BBL/process/fdm_process_dual_common.json
index ab6b214cb..b11a3d908 100644
--- a/resources/profiles/BBL/process/fdm_process_dual_common.json
+++ b/resources/profiles/BBL/process/fdm_process_dual_common.json
@@ -179,5 +179,11 @@
         "0",
         "0"
     ],
+    "vertical_shell_speed": [
+        "80%",
+        "80%",
+        "80%",
+        "80%"
+    ],
     "z_direction_outwall_speed_continuous": "1"
 }
\ No newline at end of file
diff --git a/resources/profiles/BBL/process/fdm_process_single_common.json b/resources/profiles/BBL/process/fdm_process_single_common.json
index de4d16ba3..d7dd5612b 100644
--- a/resources/profiles/BBL/process/fdm_process_single_common.json
+++ b/resources/profiles/BBL/process/fdm_process_single_common.json
@@ -78,5 +78,8 @@
     ],
     "travel_speed_z": [
         "0"
+    ],
+    "vertical_shell_speed": [
+        "80%"
     ]
 }
\ No newline at end of file
diff --git a/src/libslic3r/Fill/FillContour.cpp b/src/libslic3r/Fill/FillContour.cpp
index 20cc39251..4ff1c7dad 100644
--- a/src/libslic3r/Fill/FillContour.cpp
+++ b/src/libslic3r/Fill/FillContour.cpp
@@ -684,7 +684,7 @@ FloatingThickPolylines FillContour::resplit_order_loops(Point curr_point, std::v
         if (all_extrusions[idx]->empty())
             continue;
         ThickPolyline thick_polyline = Arachne::to_thick_polyline(*all_extrusions[idx]);
-        FloatingThickPolyline thick_line_with_floating = detect_floating_line(thick_polyline, floating_areas, default_width, print_object_config->detect_floating_vertical_shell.value);
+        FloatingThickPolyline thick_line_with_floating = detect_floating_line(thick_polyline, floating_areas, default_width, !print_object_config->detect_floating_vertical_shell.value);
         smooth_floating_line(thick_line_with_floating, scale_(2), scale_(2));
         int split_idx = 0;
         if (!floating_areas.empty() && all_extrusions[idx]->is_closed && thick_line_with_floating.points.front() == thick_line_with_floating.points.back()) {
diff --git a/src/libslic3r/PrintConfig.cpp b/src/libslic3r/PrintConfig.cpp
index 5a52622c5..879683540 100644
--- a/src/libslic3r/PrintConfig.cpp
+++ b/src/libslic3r/PrintConfig.cpp
@@ -1378,7 +1378,7 @@ void PrintConfigDef::init_fff_params()
     def->label = L("Detect floating vertical shells");
     def->tooltip = L("Detect floating vertical shells and slow them by using bridge speed.");
     def->mode = comAdvanced;
-    def->set_default_value(new ConfigOptionBool{false});
+    def->set_default_value(new ConfigOptionBool{true});
 
     def = this->add("internal_bridge_support_thickness", coFloat);
     def->label = L("Internal bridge support thickness");