@@ -219,7 +219,7 @@ def get_search_query_from_webapp(preferences, form):
219219 query_lang = preferences.get_value('language')
220220
221221 # check language
222− if query_lang not in language_code_set:
222+ if query_lang.lower() not in language_code_set:
223223 raise SearxParameterException('language', query_lang)
224224
225225 # get safesearch
@@ -240,7 +240,7 @@ def get_search_query_from_webapp(preferences, form):
240240 query_time_range = form.get('time_range')
241241
242242 # check time_range
243− if query_time_range not in [None, '', 'day', 'week', 'month', 'year']:
243+ if query_time_range not in ('None', None, '', 'day', 'week', 'month', 'year'):
244244 raise SearxParameterException('time_range', query_time_range)
245245
246246 # query_engines