diff --git a/selflocalization/particle.py b/selflocalization/particle.py
index 0109354..bef0a49 100644
--- a/selflocalization/particle.py
+++ b/selflocalization/particle.py
@@ -1,6 +1,6 @@
 import random
 import numpy as np
-import random_numbers as rn
+from selflocalization import random_numbers as rn
 
 class Particle(object):
     """Data structure for storing particle information (state and weight)"""