diff git a/demos/poisson_demo.py b/demos/poisson_demo.py
index 18a269d56305f1bf92c0881a78a2f7201e5804ec..a076311055a6600ebf0aed1b0371ffa1e7a13aea 100644
 a/demos/poisson_demo.py
+++ b/demos/poisson_demo.py
@@ 1,6 +1,7 @@
# Program to generate figures of article "Information theory for fields"
# by Torsten Ensslin, Annalen der Physik, submitted to special edition
# "Physics of Information" in April 2018
+# "Physics of Information" in April 2018, arXiv:1804.03350
+# to get exact figure of paper comment out lines marked by "COMMENT OUT"
import numpy as np
import nifty4 as ift
@@ 25,8 +26,9 @@ if __name__ == "__main__":
sigma_n = 0.2 # noise level
sigma_n2 = sigma_n**2
L = 1. # Total length of interval or volume the field lives on
 nprobes = 1000 # Number of probes for uncertainty quantification

+ nprobes = 1000 # Number of probes for uncertainty quantification used in paper
+ nprobes = 10 # COMMENT OUT TO REPRODUCE PAPER FIGURE EXACTLY
+
# Define resolution (pixels per dimension)
N_pixels = 1024