diff --git a/workflow/scripts/runMemechip.py b/workflow/scripts/runMemechip.py
index 4b17dc0d5b65b001c803005a0302db0ec6aa4099..fae98e29e3fbb43ae3d4d5db0b48ee7db00e5aff 100644
--- a/workflow/scripts/runMemechip.py
+++ b/workflow/scripts/runMemechip.py
@@ -36,7 +36,7 @@ def main():
   args = argparser.parse_args()
   run(args.infile, args.genome, args.limit, args.output)
 
-def run(infile, genome, limit, output)
+def run(infile, genome, limit, output):
   infile = pybedtools.BedTool(infile)
   #genome = twobitreader.TwoBitFile(genome)
   output = open(output+".fa","w")