diff --git a/heat/utils.py b/heat/utils.py
index 29987fe36568022fe7b20dc7b6b30b198d1fa45d..f0c75dedd96885c35abc7c9a938d1744c03dcefe 100644
--- a/heat/utils.py
+++ b/heat/utils.py
@@ -45,7 +45,7 @@ def getTemp(solver, linelabel="Bottom", sort='x'):
     import numpy as np
     v = np.array(extr.execute())
     
-    nos = np.zeros_like(v, dtype=np.int)
+    nos = np.zeros_like(v, dtype=int)
     nxs = np.zeros_like(v)
     nys = np.zeros_like(v)
     for i in range(len(v)):