diff --git a/commentaries/forms.py b/commentaries/forms.py
index 30fecc3ebc316771778cbe9994962e7f59905c04..31c4489139508a2f301a51b3ddaa52270d411c85 100644
--- a/commentaries/forms.py
+++ b/commentaries/forms.py
@@ -20,7 +20,7 @@ class DOIToQueryForm(forms.Form):
     VALID_DOI_REGEXP = r'^(?i)10.\d{4,9}/[-._;()/:A-Z0-9]+$'
     doi = forms.RegexField(regex=VALID_DOI_REGEXP, strip=True,
                            help_text=strings.doi_query_help_text,
-                           error_messxages={'invalid': strings.doi_query_invalid},
+                           error_messages={'invalid': strings.doi_query_invalid},
                            widget=forms.TextInput({
                                 'label': 'DOI',
                                 'placeholder': strings.doi_query_placeholder
diff --git a/commentaries/views.py b/commentaries/views.py
index e95b4915ee1258132f8191a5831b01c3e7e110f2..acc1a785cc352b03ac37d5e6472ff9b12a2d44f2 100644
--- a/commentaries/views.py
+++ b/commentaries/views.py
@@ -1,28 +1,22 @@
-import re
-import requests
-
 from django.shortcuts import get_object_or_404, render
 from django.contrib import messages
 from django.contrib.auth.decorators import permission_required
-from django.contrib.auth.mixins import LoginRequiredMixin
 from django.core.mail import EmailMessage
 from django.core.urlresolvers import reverse, reverse_lazy
 from django.db.models import Q
-from django.shortcuts import redirect
 from django.template.loader import render_to_string
-from django.views.generic.edit import CreateView, FormView
+from django.views.generic.edit import CreateView
 from django.views.generic.list import ListView
 from django.utils.decorators import method_decorator
 from django.http import Http404
 
 from .models import Commentary
-from .forms import DOIToQueryForm, ArxivQueryForm, VetCommentaryForm, \
-    CommentarySearchForm, RequestPublishedArticleForm, RequestArxivPreprintForm
+from .forms import DOIToQueryForm, ArxivQueryForm, VetCommentaryForm, RequestCommentaryForm,\
+                   CommentarySearchForm, RequestPublishedArticleForm, RequestArxivPreprintForm
 
 from comments.models import Comment
 from comments.forms import CommentForm
 from scipost.models import Contributor
-from scipost.services import ArxivCaller
 
 import strings
 
@@ -31,6 +25,7 @@ import strings
 def request_commentary(request):
     return render(request, 'commentaries/request_commentary.html')
 
+
 @method_decorator(permission_required(
     'scipost.can_request_commentary_pages', raise_exception=True), name='dispatch')
 class RequestCommentary(CreateView):
@@ -111,6 +106,7 @@ def vet_commentary_requests(request):
     context = {'contributor': contributor, 'commentary_to_vet': commentary_to_vet, 'form': form}
     return render(request, 'commentaries/vet_commentary_requests.html', context)
 
+
 @permission_required('scipost.can_vet_commentary_requests', raise_exception=True)
 def vet_commentary_request_ack(request, commentary_id):
     if request.method == 'POST':