diff --git a/invesalius/data/styles.py b/invesalius/data/styles.py
index fa9519f..2c8690e 100644
--- a/invesalius/data/styles.py
+++ b/invesalius/data/styles.py
@@ -740,11 +740,17 @@ class WatershedConfig(object):
     __metaclass__= utils.Singleton
     def __init__(self):
         self.operation = BRUSH_FOREGROUND
+        self.use_ww_wl = True
+
         Publisher.subscribe(self.set_operation, 'Set watershed operation')
+        Publisher.subscribe(self.set_use_ww_wl, 'Set use ww wl')
 
     def set_operation(self, pubsub_evt):
         self.operation = WATERSHED_OPERATIONS[pubsub_evt.data]
 
+    def set_use_ww_wl(self, pubsub_evt):
+        self.use_ww_wl = pubsub_evt.data
+
 
 class WaterShedInteractorStyle(DefaultInteractorStyle):
     def __init__(self, viewer):
@@ -1004,8 +1010,12 @@ class WaterShedInteractorStyle(DefaultInteractorStyle):
         wl = self.viewer.slice_.window_level
         
         if BRUSH_BACKGROUND in markers and BRUSH_FOREGROUND in markers:
-            tmp_image = ndimage.morphological_gradient(get_LUT_value(image, ww, wl).astype('uint16'), self.mg_size)
-            tmp_mask = watershed(tmp_image, markers)
+            if self.config.use_ww_wl:
+                tmp_image = ndimage.morphological_gradient(get_LUT_value(image, ww, wl).astype('uint16'), self.mg_size)
+                tmp_mask = watershed(tmp_image, markers)
+            else:
+                tmp_image = ndimage.morphological_gradient(image, self.mg_size)
+                tmp_mask = watershed(tmp_image, markers)
 
             if self.viewer.overwrite_mask:
                 mask[:] = 0
@@ -1111,8 +1121,12 @@ class WaterShedInteractorStyle(DefaultInteractorStyle):
         ww = self.viewer.slice_.window_width
         wl = self.viewer.slice_.window_level
         if BRUSH_BACKGROUND in markers and BRUSH_FOREGROUND in markers:
-            tmp_image = ndimage.morphological_gradient(get_LUT_value(image, ww, wl).astype('uint16'), self.mg_size)
-            tmp_mask = watershed(tmp_image, markers)
+            if self.config.use_ww_wl:
+                tmp_image = ndimage.morphological_gradient(get_LUT_value(image, ww, wl).astype('uint16'), self.mg_size)
+                tmp_mask = watershed(tmp_image, markers)
+            else:
+                tmp_image = ndimage.morphological_gradient(image, self.mg_size)
+                tmp_mask = watershed(tmp_image, markers)
 
             if self.viewer.overwrite_mask:
                 mask[:] = 0
diff --git a/invesalius/gui/task_slice.py b/invesalius/gui/task_slice.py
index d77570e..101ac68 100644
--- a/invesalius/gui/task_slice.py
+++ b/invesalius/gui/task_slice.py
@@ -773,7 +773,10 @@ class WatershedTool(EditionTools):
 
         # LINE 5
         check_box = wx.CheckBox(self, -1, _("Overwrite mask"))
+        ww_wl_cbox = wx.CheckBox(self, -1, _("Use WW&WL"))
+        ww_wl_cbox.SetValue(True)
         self.check_box = check_box
+        self.ww_wl_cbox = ww_wl_cbox
 
         # Line 6
         self.btn_exp_watershed = wx.Button(self, -1, _('Expand watershed to 3D'))
@@ -783,6 +786,7 @@ class WatershedTool(EditionTools):
         sizer.Add(text1, 0, wx.GROW|wx.EXPAND|wx.LEFT|wx.RIGHT|wx.TOP, 5)
         sizer.Add(line2, 0, wx.GROW|wx.EXPAND|wx.LEFT|wx.RIGHT|wx.TOP, 5)
         sizer.Add(check_box, 0, wx.GROW|wx.EXPAND|wx.LEFT|wx.RIGHT|wx.TOP, 5)
+        sizer.Add(ww_wl_cbox, 0, wx.GROW|wx.EXPAND|wx.LEFT|wx.RIGHT|wx.TOP, 5)
         sizer.Add(self.btn_exp_watershed, 0, wx.GROW|wx.EXPAND|wx.LEFT|wx.RIGHT|wx.TOP, 5)
         sizer.Fit(self)
 
@@ -797,6 +801,7 @@ class WatershedTool(EditionTools):
         self.Bind(wx.EVT_MENU, self.OnMenu)
         self.combo_brush_op.Bind(wx.EVT_COMBOBOX, self.OnComboBrushOp)
         self.check_box.Bind(wx.EVT_CHECKBOX, self.OnCheckOverwriteMask)
+        self.ww_wl_cbox.Bind(wx.EVT_CHECKBOX, self.OnCheckWWWL)
         self.btn_exp_watershed.Bind(wx.EVT_BUTTON, self.OnExpandWatershed)
 
     def ChangeMaskColour(self, pubsub_evt):
@@ -851,5 +856,9 @@ class WatershedTool(EditionTools):
         value = self.check_box.GetValue()
         Publisher.sendMessage('Set overwrite mask', value)
 
+    def OnCheckWWWL(self, evt):
+        value = self.ww_wl_cbox.GetValue()
+        Publisher.sendMessage('Set use ww wl', value)
+
     def OnExpandWatershed(self, evt):
         Publisher.sendMessage('Expand watershed to 3D AXIAL')
--
libgit2 0.21.2