diff --git a/particle.py b/particle.py
index ab49aef..6fdf725 100644
--- a/particle.py
+++ b/particle.py
@@ -89,7 +89,7 @@ class Particle():
         return vel
     
     # Function objective
-    def evaluate(self,f_weights,elec_prices,socs,socs_req,times):
+    def evaluate(self,elec_prices,socs,socs_req,times):
         f1 = self.f1(elec_prices)
         f2 = self.f2(socs,socs_req,times)
         f3 = self.f3()