diff --git a/to-rpz/domains_rpz_argv.py b/to-rpz/domains_rpz_argv.py
index 1794a31..8744fd4 100644
--- a/to-rpz/domains_rpz_argv.py
+++ b/to-rpz/domains_rpz_argv.py
@@ -9,7 +9,7 @@ outfile = sys.argv[2]
 with open(infile) as f:
     file = f.read().split('\n')
 for i in range(len(file)):
-    file[i] = sub(r'#', ';', file[i])
+    file[i] = sub(r'#|\!', ';', file[i])
 #print(file)
 with open(infile, 'w') as f1:
     f1.writelines(["%s\n" % item  for item in file])