diff --git a/phases/models/parallel_model.py b/phases/models/parallel_model.py
index 5f3e969..97c0ed7 100644
--- a/phases/models/parallel_model.py
+++ b/phases/models/parallel_model.py
@@ -2,7 +2,8 @@ import numpy as np
 from scipy.optimize import fsolve
 
 
-def parallel2gap(K, phi, undudict):
+def parallel2gap(K, phi_in_degree, undudict):
+    phi = math.radians(phi_in_degree)
     gLH = K2gap(K, undudict['K-value_LH'])
     if phi >= 0.0:
         gLV = K2gap(K, undudict['K-value_LV+'])