diff -r f19788028d99 -r 5b8a7dd43f9f dialogs/PouTransitionDialog.py
--- a/dialogs/PouTransitionDialog.py	Tue Aug 28 18:06:30 2018 +0300
+++ b/dialogs/PouTransitionDialog.py	Wed Aug 29 18:53:02 2018 +0300
@@ -40,14 +40,13 @@
     return [_("IL"), _("ST"), _("LD"), _("FBD")]
 
 
-TRANSITION_LANGUAGES_DICT = dict([(_(language), language) for language in GetTransitionLanguages()])
-
-
 class PouTransitionDialog(wx.Dialog):
-
     def __init__(self, parent):
         wx.Dialog.__init__(self, parent, title=_('Create a new transition'))
 
+        self.TRANSITION_LANGUAGES_DICT = dict([(_(language), language)
+                                               for language in GetTransitionLanguages()])
+
         main_sizer = wx.FlexGridSizer(cols=1, hgap=0, rows=2, vgap=10)
         main_sizer.AddGrowableCol(0)
         main_sizer.AddGrowableRow(0)
@@ -133,5 +132,5 @@
     def GetValues(self):
         values = {}
         values["transitionName"] = self.TransitionName.GetValue()
-        values["language"] = TRANSITION_LANGUAGES_DICT[self.Language.GetStringSelection()]
+        values["language"] = self.TRANSITION_LANGUAGES_DICT[self.Language.GetStringSelection()]
         return values