diff --git a/phe/encoding.py b/phe/encoding.py
index 785b11c..bbcf4cd 100644
--- a/phe/encoding.py
+++ b/phe/encoding.py
@@ -188,8 +188,8 @@ def encode(cls, public_key, scalar, precision=None, max_exponent=None):
             exponent = min(max_exponent, prec_exponent)
 
         # Use rationals instead of floats to avoid overflow.
-        int_rep = round(fractions.Fraction(scalar)
-                        * fractions.Fraction(cls.BASE) ** -exponent)
+        int_rep = int(round(fractions.Fraction(scalar)
+                        * fractions.Fraction(cls.BASE) ** -exponent))
 
         if abs(int_rep) > public_key.max_int:
             raise ValueError('Integer needs to be within +/- %d but got %d'
diff --git a/phe/tests/paillier_test.py b/phe/tests/paillier_test.py
index 81c59d9..97414c2 100644
--- a/phe/tests/paillier_test.py
+++ b/phe/tests/paillier_test.py
@@ -25,6 +25,7 @@
 import unittest
 import sys
 import math
+import numpy
 
 from phe import paillier
 
@@ -1094,6 +1095,10 @@ def testIssue62(self):
         # This will raise OverflowError without bugfix #73.
         priv.decrypt(a + b)
 
+class TestNumpyOverflow(unittest.TestCase):
+    def testNumpyOverflow(self):
+        public_key, private_key = paillier.generate_paillier_keypair()
+        private_key.decrypt(public_key.encrypt(numpy.int64(0),precision=2**-12))
 
 def main():
     unittest.main()