diff --git a/PythonWrapper/example.py b/PythonWrapper/example.py
index 80fd87aa..caa6db40 100644
--- a/PythonWrapper/example.py
+++ b/PythonWrapper/example.py
@@ -2,7 +2,7 @@ import cmsisdsp as dsp
 import numpy as np
 from scipy import signal
 from pylab import figure, clf, plot, xlabel, ylabel, xlim, ylim, title, grid, axes, show,semilogx, semilogy
-# Data file from https://www.physionet.org/pn3/ecgiddb/Person_87/rec_2.dat
+# Data file from https://physionet.org/content/ecgiddb/1.0.0/Person_87/rec_2.dat
 
 def q31sat(x):
      if x > 0x7FFFFFFF: