diff --git a/mopso.py b/mopso.py
index ee9f0fc..0198f1a 100644
--- a/mopso.py
+++ b/mopso.py
@@ -1,5 +1,5 @@
 import random as rd
-from .particle import Particle
+from particle import Particle
 import copy
 
 class MOPSO():
@@ -17,7 +17,7 @@ class MOPSO():
         # Initialisation of particle's global parameters
         self.A_max = A_max # Network's power limit
         self.socs, self.socs_req = self.generate_state_of_charges(nb_vehicles,nb_of_ticks)
-        self.times = self.generate_times(nb_vehicles, nb_of_ticks, delta_t)
+        self.times = self.generate_times(nb_vehicles, nb_of_ticks)
         self.prices = self.generates_prices(nb_of_ticks,price_mean,price_std) #TODO: Use RTE France prices for random prices generation according to number of ticks
         self.capacities = capacities
 
@@ -83,7 +83,7 @@ class MOPSO():
     def generates_prices(self,nb_of_ticks:int, mean:float, std:float):
         prices = []
         for _ in range(nb_of_ticks):
-            variation = rd.randrange(-(std*10), (std * 10) +1, 1) / 10 # Random float variation
+            variation = rd.uniform(-std, std) # Random float variation
             prices.append(mean + variation)
         return prices