diff --git a/Palette/env/engine.py b/Palette/env/engine.py
index 96ae820..8dcc260 100644
--- a/Palette/env/engine.py
+++ b/Palette/env/engine.py
@@ -29,7 +29,7 @@ class SeaEnvEngine(object):
         ship_radius: int,
         ship_velocity: int,
 
-        sonar_spread_times: int,    # the number of sonar detection points
+        sonar_spread_times: int,    
 
         obstacles: dict,
 
diff --git a/Palette/env/sea_env.py b/Palette/env/sea_env.py
index 5250fa3..364397e 100644
--- a/Palette/env/sea_env.py
+++ b/Palette/env/sea_env.py
@@ -109,7 +109,7 @@ def make(
     filling_time: int = 1,
     cover_ratio: float = 1.0
 ):
-    
+
 
     with open(os.path.join('Palette', 'maps', f'{env_config}.yaml'), 'r') as f:
         config = yaml.safe_load(f)