diff --git a/RoutingPreProc.py b/RoutingPreProc.py
index 385ea9cf66dd71386e79f6405d066fa6126f5a7a..dd8a0dff14da41176c00c3130a12830768004e01 100644
--- a/RoutingPreProc.py
+++ b/RoutingPreProc.py
@@ -16,7 +16,7 @@ import time
 # Gert the information from the configuration file.
 #
 import configparser
-config=configparser.ConfigParser({'SaveWeights':'true', "DiagLon":"0.0, 0.0", "DiagLat":"0.0, 0.0"})
+config=configparser.ConfigParser({'SaveWeights':'true', "DiagLon":"0.0, 0.0", "DiagLat":"0.0, 0.0", "numop" : 100})
 config.read("run.def")
 saveweights=config.get("OverAll", "SaveWeights")
 nbasmax=int(config.getfloat("OverAll", "nbasmax"))