diff --git a/Palette/env/engine.py b/Palette/env/engine.py
index 87cc2c7..2e618c3 100644
--- a/Palette/env/engine.py
+++ b/Palette/env/engine.py
@@ -363,7 +363,7 @@ class SeaEnvEngine(object):
             else:
                 self.ship_body[ship_id].velocity = 0.0 * driving_direction
 
-         
+
         if self.draw_screen:
             # self.screen.fill(THECOLORS["black"])
             self.screen.blit(self.ss_img, (0, 0))
@@ -377,7 +377,6 @@ class SeaEnvEngine(object):
                                 self.field_size[1] * j
                             # the size of your rect
                             s = pygame.Surface(self.field_size)
-                            # alpha level
                             s.set_alpha(int(96 * self.fields[i, j]))
                             # this fills the entire surface
                             color = COLORS[int(self._splited_areas[i, j] - 1)]