diff --git a/validphys2/src/validphys/paramfits/dataops.py b/validphys2/src/validphys/paramfits/dataops.py
index fed61f8b2f..81c0992fc4 100644
--- a/validphys2/src/validphys/paramfits/dataops.py
+++ b/validphys2/src/validphys/paramfits/dataops.py
@@ -57,7 +57,7 @@ def location(self):
 
     @property
     def scale(self):
-        return np.asscalar(np.diff(np.percentile(self.data, [15.87, 84.13])))/2
+        return (np.diff(np.percentile(self.data, [15.87, 84.13]))).item()/2
 
 
 def get_parabola(asvals, chi2vals):