diff --git a/pypolycontain/operations.py b/pypolycontain/operations.py
index 3d7b3cb..1a97b77 100644
--- a/pypolycontain/operations.py
+++ b/pypolycontain/operations.py
@@ -525,7 +525,7 @@ def convex_hull_of_point_and_polytope(x, Q):
     new_h=np.zeros((Q.P.h.shape[0]+2,1))
     new_h[Q.P.h.shape[0],0],new_h[Q.P.h.shape[0]+1,0]=1,0
     new_P=pp.H_polytope(new_H,new_h)
-    return pp.AH_polytope(new_T,new_t,new_P)
+    return pp.AH_polytope(t=new_t,T=new_T,P=new_P)
     
 
 def minkowski_sum(P1,P2):
@@ -817,4 +817,4 @@ def decompose(zonotope,dimensions):
     G_i_result = [result.GetSolution(G_i[i]) for i in range(len(dimensions))]
     list_zon = [pp.zonotope(G = G_i_result[i],x = x_i_result[i]) for i in range(len(dimensions))]
 
-    return list_zon
\ No newline at end of file
+    return list_zon