diff --git a/src/View/Results/PlotXY.py b/src/View/Results/PlotXY.py
index a88071f89a3a08071d784769e465f2c5845e9fb0..3e7a88f3d0daf53b860eeb0deba0e9525f77c3c8 100644
--- a/src/View/Results/PlotXY.py
+++ b/src/View/Results/PlotXY.py
@@ -159,9 +159,8 @@ class PlotXY(APlot):
 
         poly_x = poly_l_x + list(reversed(poly_r_x)) + [poly_l_x[0]]
         poly_y = poly_l_y + list(reversed(poly_r_y)) + [poly_l_y[0]]
-        # FIXME: Fill do not works ? (tmp fix: use plot)
-        self.canvas.axes.fill(poly_x, poly_y, color='blue', alpha=0.5)
-        self.canvas.axes.plot(poly_x, poly_y, color='blue', alpha=0.5)
+
+        self.canvas.axes.fill(poly_x, poly_y, color='blue', alpha=1)
 
         self.canvas.axes.autoscale_view(True, True, True)
         self.canvas.axes.autoscale()