diff --git a/priorConditionedAnnealing/noise.py b/priorConditionedAnnealing/noise.py
index a87cfd7..2d5d8ea 100644
--- a/priorConditionedAnnealing/noise.py
+++ b/priorConditionedAnnealing/noise.py
@@ -116,11 +116,11 @@ class Harmonic_Perlin_Noise():
         self.scale = scale
         if type(octaves) in [int, float]:
             int_octaves = int(octaves)
-            octaves = [1/(i+1) for i in range(int_octaves)]
+            octaves_arr = [1/(i+1) for i in range(int_octaves)]
             if type(octaves) == float:
-                octaves += [1/(int_octaves+2)*(octaves-int_octaves)]
-        octaves = np.array(octaves)
-        self.octaves = octaves / np.linalg.norm(octaves)
+                octaves_arr += [1/(int_octaves+2)*(octaves-int_octaves)]
+        octaves_arr = np.array(octaves_arr)
+        self.octaves = octaves_arr / np.linalg.norm(octaves_arr)
         self.reset()
 
     def __call__(self, shape):