diff --git a/PyRoca.py b/PyRoca.py
index 8532035..255a25e 100644
--- a/PyRoca.py
+++ b/PyRoca.py
@@ -322,7 +322,7 @@ def factorize(self):
         tt = self.tt
         generator = self.generator
         #generator is known: p=k * m + (generator^a mod m)
-        phi_n = fpmz.euler_phi(fmpz(m)) #Euler totient in FLINT
+        phi_n = fmpz.euler_phi(fmpz(m)) #Euler totient in FLINT
         decomp_phi_n = phi_n.factor() # list with prime factors & multiplicities
         order = self.generator_order(generator, m, phi_n, decomp_phi_n)
         decomp_order = fmpz(order).factor()