diff --git a/python/Generators/MadgraphProcDB.py b/python/Generators/MadgraphProcDB.py
index aabc854..3a2a22b 100644
--- a/python/Generators/MadgraphProcDB.py
+++ b/python/Generators/MadgraphProcDB.py
@@ -35,8 +35,7 @@ def get_proc_out(self):
         return self.procout
 
     def write_run_ZH(self):
-        out  = "set WZ 0\n" 
-        out += "set WH 0\n"
+        out = ""
         return out