diff --git a/wetb/prepost/GenerateDLCs.py b/wetb/prepost/GenerateDLCs.py
index 4563ccbe28deb9db7f929de67cc4cecdaf270b5b..5cb2fe9bc7f2150ea524441566780234ce6aa75c 100644
--- a/wetb/prepost/GenerateDLCs.py
+++ b/wetb/prepost/GenerateDLCs.py
@@ -134,11 +134,16 @@ class GeneralDLC(object):
                         if formula[0] == '"':
                             if key == '[wsp]' or key == '[gridgustdelay]':
                                 fmt = '%2.2i'
+                                formula = formula.replace(key, fmt%int(dlc[key][i]))
                             elif key == '[wdir]' or key == '[G_phi0]':
                                 fmt = '%3.3i'
+                                formula = formula.replace(key, fmt%int(dlc[key][i]))
+                            elif key == '[sign]':
+                                fmt = '%s'
+                                formula = formula.replace(key, fmt%dlc[key][i])
                             else:
                                 fmt = '%4.4i'
-                            formula = formula.replace(key, fmt % int(dlc[key][i]))
+                                formula = formula.replace(key, fmt % int(dlc[key][i]))
                         elif key in formula:
                             formula = formula.replace(key, '%s' % dlc[key][i])
                 formula = formula.replace(',', '.')
@@ -269,4 +274,5 @@ if __name__ == '__main__':
                         dest='folder', help='Destination folder name')
     opt = parser.parse_args()
     DLB = GenerateDLCCases()
-    DLB.execute(filename=opt.filename, folder=opt.folder)
\ No newline at end of file
+    DLB.execute(filename=opt.filename, folder=opt.folder)
+