diff --git a/seahub/api2/endpoints/invitations.py b/seahub/api2/endpoints/invitations.py
index 4a4afc4279..6ef63ebad8 100644
--- a/seahub/api2/endpoints/invitations.py
+++ b/seahub/api2/endpoints/invitations.py
@@ -148,8 +148,7 @@ class InvitationsBatchView(APIView):
             if not send_success:
                 result['failed'].append({
                     'email': accepter,
-                    'error_msg': _('Failed to send email, email service is not properly configured, \
-                                please contact administrator.'),
+                    'error_msg': _('Failed to send email, email service is not properly configured, please contact administrator.'),
                 })
             else:
                 result['success'].append(i.to_dict())
diff --git a/seahub/api2/endpoints/repo_share_invitations.py b/seahub/api2/endpoints/repo_share_invitations.py
index cacf8baf8d..e45d636e77 100644
--- a/seahub/api2/endpoints/repo_share_invitations.py
+++ b/seahub/api2/endpoints/repo_share_invitations.py
@@ -207,8 +207,7 @@ class RepoShareInvitationsBatchView(APIView):
             if not send_sucess:
                 result['failed'].append({
                     'email': accepter,
-                    'error_msg': _('Failed to send email, email service is not properly configured, \
-                            please contact administrator.'),
+                    'error_msg': _('Failed to send email, email service is not properly configured, please contact administrator.'),
                 })
 
         return Response(result)
diff --git a/seahub/api2/endpoints/send_share_link_email.py b/seahub/api2/endpoints/send_share_link_email.py
index 73065a30b3..4de5acbebd 100644
--- a/seahub/api2/endpoints/send_share_link_email.py
+++ b/seahub/api2/endpoints/send_share_link_email.py
@@ -30,7 +30,7 @@ class SendShareLinkView(APIView):
     def post(self, request):
 
         if not IS_EMAIL_CONFIGURED:
-            error_msg = _('Sending shared link failed. Email service is not properly configured, please contact administrator.')
+            error_msg = _('Failed to send email, email service is not properly configured, please contact administrator.')
             return api_error(status.HTTP_403_FORBIDDEN, error_msg)
 
         # check args
diff --git a/seahub/api2/endpoints/send_upload_link_email.py b/seahub/api2/endpoints/send_upload_link_email.py
index fd045b645d..7fec584e1c 100644
--- a/seahub/api2/endpoints/send_upload_link_email.py
+++ b/seahub/api2/endpoints/send_upload_link_email.py
@@ -29,7 +29,7 @@ class SendUploadLinkView(APIView):
     def post(self, request):
 
         if not IS_EMAIL_CONFIGURED:
-            error_msg = _('Sending shared link failed. Email service is not properly configured, please contact administrator.')
+            error_msg = _('Failed to send email, email service is not properly configured, please contact administrator.')
             return api_error(status.HTTP_403_FORBIDDEN, error_msg)
 
         # check args
diff --git a/seahub/share/views.py b/seahub/share/views.py
index 61ec42fd14..1a0e85cf32 100644
--- a/seahub/share/views.py
+++ b/seahub/share/views.py
@@ -133,8 +133,7 @@ def send_shared_link(request):
     content_type = 'application/json; charset=utf-8'
 
     if not IS_EMAIL_CONFIGURED:
-        data = json.dumps({'error': _('Sending shared link failed. \
-                Email service is not properly configured, please contact administrator.')})
+        data = json.dumps({'error': _('Failed to send email, email service is not properly configured, please contact administrator.')})
         return HttpResponse(data, status=500, content_type=content_type)
 
     form = FileLinkShareForm(request.POST)
@@ -262,8 +261,7 @@ def send_shared_upload_link(request):
     content_type = 'application/json; charset=utf-8'
 
     if not IS_EMAIL_CONFIGURED:
-        data = json.dumps({'error': _('Sending shared upload link failed. \
-                Email service is not properly configured, please contact administrator.')})
+        data = json.dumps({'error': _('Failed to send email, email service is not properly configured, please contact administrator.')})
         return HttpResponse(data, status=500, content_type=content_type)
 
     form = UploadLinkShareForm(request.POST)