diff --git a/Palette/env/engine.py b/Palette/env/engine.py
index a35e40e..fc1a2aa 100644
--- a/Palette/env/engine.py
+++ b/Palette/env/engine.py
@@ -38,7 +38,7 @@ class SeaEnvEngine(object):
         show_fields: bool = True,
 
         init_ships: bool = True,
-        start_position=None, 
+        start_position=None,
         start_r=None,
 
         time_click: float = 1.0/10.0,
@@ -58,7 +58,7 @@ class SeaEnvEngine(object):
         self.max_angle, self.min_angle = None, None
 
         # basic params
-        self.crashed = False    # whether or not crash into an obstacle or bound
+        self.crashed = False    
         self.finished = False
         self.terminate = False