diff --git a/water_sim.py b/water_sim.py
index 5f4385e..199da08 100644
--- a/water_sim.py
+++ b/water_sim.py
@@ -2,12 +2,12 @@
 
 from game import *
 
-class Sim(Game):
+class WaterSim(Game):
     def __init__(self,N):
         self.N = N
         self.init_data(N//2)
         self.mousepos = (0,0)
-        super(Sim, self).__init__( 1000, 600, 120)
+        super(WaterSim, self).__init__( 1000, 600, 120)
 
     def init_data(self, middle):
         self.C = [50] * self.N
@@ -60,4 +60,4 @@ class Sim(Game):
             prev_point = new_point
 
 if __name__ == '__main__':
-    Sim(100).on_execute()
+    WaterSim(100).on_execute()