diff --git a/evrouting/charge/T.py b/evrouting/charge/T.py
index 8316c91b281ffae99274c19e21ecd17a413ac4c5..259aa4bc989135ed9375e5a1ee91aae1aad9cbb6 100644
--- a/evrouting/charge/T.py
+++ b/evrouting/charge/T.py
@@ -13,11 +13,11 @@ Label = namedtuple('Label', ['t_trip', 'beta_u', 'u', 'SoCProfile_u_v'])
 class ChargingFunction:
 
     def __init__(self, G: nx.Graph, n: Node, U: SoC):
-        self.c_n = charging_cofficient(G, n)
+        self.c = charging_cofficient(G, n)
         self.U = U
 
     def __call__(self, t: Time, beta: SoC = 0) -> SoC:
-        beta += self.c_n * t
+        beta += self.c * t
 
         if beta > self.U:
             return self.U
@@ -41,7 +41,7 @@ class SoCFunction:
     def get_minimum(self) -> Time:
         """TODO: Explain."""
         cost_p = self.b_u_v.cost
-        return max(self.t_trip, (cost_p - self.beta_u) / self.c_u + self.t_trip)
+        return max(self.t_trip, (cost_p - self.beta_u) / self.cf.c + self.t_trip)
 
 
 class SoCProfile: