diff --git a/Analysis/read_eddy_graph.py b/Analysis/read_eddy_graph.py
index 2175982fa2ec754c97a798d42b9d329a2c7d55f7..b7d3755bdb1507397158ce11c9e6beab0487f647 100755
--- a/Analysis/read_eddy_graph.py
+++ b/Analysis/read_eddy_graph.py
@@ -2,12 +2,10 @@
 
 import networkx as nx
 import csv
-import sys
 
-if len(sys.argv) != 2: sys.exit("Required argument: edgelist-CSV-file")
 G = nx.DiGraph()
 
-with open(sys.argv[1]) as f:
+with open("edgelist.csv") as f:
     reader = csv.reader(f, delimiter = " ", skipinitialspace = True)
 
     # Skip title lines: