diff --git a/searx/results.py b/searx/results.py
index 3b1e4bd6..02ab9efb 100644
--- a/searx/results.py
+++ b/searx/results.py
@@ -345,8 +345,8 @@ class ResultContainer(object):
             return 0
         return resultnum_sum / len(self._number_of_results)
 
-    def add_unresponsive_engine(self, engine_error):
-        self.unresponsive_engines.add(engine_error)
+    def add_unresponsive_engine(self, engine_name, error_type, error_message=None):
+        self.unresponsive_engines.add((engine_name, error_type, error_message))
 
     def add_timing(self, engine_name, engine_time, page_load_time):
         self.timings.append({
diff --git a/searx/search.py b/searx/search.py
index 2dcc4c8f..661add7c 100644
--- a/searx/search.py
+++ b/searx/search.py
@@ -127,11 +127,7 @@ def search_one_offline_request_safe(engine_name, query, request_params, result_c
         logger.exception('engine {0} : invalid input : {1}'.format(engine_name, e))
     except Exception as e:
         record_offline_engine_stats_on_error(engine, result_container, start_time)
-
-        result_container.add_unresponsive_engine((
-            engine_name,
-            u'{0}: {1}'.format(gettext('unexpected crash'), e),
-        ))
+        result_container.add_unresponsive_engine(engine_name, 'unexpected crash', str(e))
         logger.exception('engine {0} : exception : {1}'.format(engine_name, e))
 
 
@@ -186,24 +182,21 @@ def search_one_http_request_safe(engine_name, query, request_params, result_cont
             engine.stats['errors'] += 1
 
         if (issubclass(e.__class__, requests.exceptions.Timeout)):
-            result_container.add_unresponsive_engine((engine_name, gettext('timeout')))
+            result_container.add_unresponsive_engine(engine_name, 'timeout')
             # requests timeout (connect or read)
             logger.error("engine {0} : HTTP requests timeout"
                          "(search duration : {1} s, timeout: {2} s) : {3}"
                          .format(engine_name, engine_time, timeout_limit, e.__class__.__name__))
             requests_exception = True
         elif (issubclass(e.__class__, requests.exceptions.RequestException)):
-            result_container.add_unresponsive_engine((engine_name, gettext('request exception')))
+            result_container.add_unresponsive_engine(engine_name, 'request exception')
             # other requests exception
             logger.exception("engine {0} : requests exception"
                              "(search duration : {1} s, timeout: {2} s) : {3}"
                              .format(engine_name, engine_time, timeout_limit, e))
             requests_exception = True
         else:
-            result_container.add_unresponsive_engine((
-                engine_name,
-                u'{0}: {1}'.format(gettext('unexpected crash'), e),
-            ))
+            result_container.add_unresponsive_engine(engine_name, 'unexpected crash', str(e))
             # others errors
             logger.exception('engine {0} : exception : {1}'.format(engine_name, e))
 
@@ -238,7 +231,7 @@ def search_multiple_requests(requests, result_container, start_time, timeout_lim
             remaining_time = max(0.0, timeout_limit - (time() - start_time))
             th.join(remaining_time)
             if th.isAlive():
-                result_container.add_unresponsive_engine((th._engine_name, gettext('timeout')))
+                result_container.add_unresponsive_engine(th._engine_name, 'timeout')
                 logger.warning('engine timeout: {0}'.format(th._engine_name))
 
 
diff --git a/searx/webapp.py b/searx/webapp.py
index c910230a..8c353106 100755
--- a/searx/webapp.py
+++ b/searx/webapp.py
@@ -56,6 +56,7 @@ from flask import (
 from babel.support import Translations
 import flask_babel
 from flask_babel import Babel, gettext, format_date, format_decimal
+from flask.ctx import has_request_context
 from flask.json import jsonify
 from searx import brand
 from searx import settings, searx_dir, searx_debug
@@ -165,13 +166,11 @@ _flask_babel_get_translations = flask_babel.get_translations
 
 # monkey patch for flask_babel.get_translations
 def _get_translations():
-    translation_locale = request.form.get('use-translation')
-    if translation_locale:
+    if has_request_context() and request.form.get('use-translation') == 'oc':
         babel_ext = flask_babel.current_app.extensions['babel']
-        translation = Translations.load(next(babel_ext.translation_directories), 'oc')
-    else:
-        translation = _flask_babel_get_translations()
-    return translation
+        return Translations.load(next(babel_ext.translation_directories), 'oc')
+
+    return _flask_babel_get_translations()
 
 
 flask_babel.get_translations = _get_translations
@@ -627,7 +626,7 @@ def index():
                                     'corrections': list(result_container.corrections),
                                     'infoboxes': result_container.infoboxes,
                                     'suggestions': list(result_container.suggestions),
-                                    'unresponsive_engines': list(result_container.unresponsive_engines)},
+                                    'unresponsive_engines': __get_translated_errors(result_container.unresponsive_engines)},  # noqa
                                    default=lambda item: list(item) if isinstance(item, set) else item),
                         mimetype='application/json')
     elif output_format == 'csv':
@@ -695,7 +694,7 @@ def index():
         corrections=correction_urls,
         infoboxes=result_container.infoboxes,
         paging=result_container.paging,
-        unresponsive_engines=result_container.unresponsive_engines,
+        unresponsive_engines=__get_translated_errors(result_container.unresponsive_engines),
         current_language=match_language(search_query.lang,
                                         LANGUAGE_CODES,
                                         fallback=request.preferences.get_value("language")),
@@ -706,6 +705,16 @@ def index():
     )
 
 
+def __get_translated_errors(unresponsive_engines):
+    translated_errors = []
+    for unresponsive_engine in unresponsive_engines:
+        error_msg = gettext(unresponsive_engine[1])
+        if unresponsive_engine[2]:
+            error_msg = "{} {}".format(error_msg, unresponsive_engine[2])
+        translated_errors.append((unresponsive_engine[0], error_msg))
+    return translated_errors
+
+
 @app.route('/about', methods=['GET'])
 def about():
     """Render about page"""