diff --git a/core/views_logbooks.py b/core/views_logbooks.py
index dcc26f8..1ef7838 100644
--- a/core/views_logbooks.py
+++ b/core/views_logbooks.py
@@ -6,7 +6,7 @@ import django.db.models
 from django.db.models import Min, Max
 from django.urls import reverse
 from django.http import HttpResponse, HttpResponseRedirect
-from django.shortcuts import render, render_to_response
+from django.shortcuts import render
 from django.template import Context, loader
 from django.template.defaultfilters import slugify
 from django.utils import timezone
@@ -31,6 +31,7 @@ import troggle.settings as settings
 # to each template. So we use a custom method, render_response
 # instead of render_to_response. Hopefully future Django releases
 # will make this unnecessary.
+
 # from troggle.alwaysUseRequestContext import render_response
 
 # Deprecated in 1.11.29
diff --git a/core/views_logbooks2.py b/core/views_logbooks2.py
index d79bbd3..a38806a 100644
--- a/core/views_logbooks2.py
+++ b/core/views_logbooks2.py
@@ -6,7 +6,7 @@ import django.db.models
 from django.db.models import Min, Max
 from django.urls import reverse
 from django.http import HttpResponse, HttpResponseRedirect
-from django.shortcuts import render, render_to_response
+from django.shortcuts import render
 from django.template import Context, loader
 from django.template.defaultfilters import slugify
 from django.utils import timezone
@@ -31,6 +31,7 @@ import troggle.settings as settings
 # to each template. So we use a custom method, render_response
 # instead of render_to_response. Hopefully future Django releases
 # will make this unnecessary.
+
 # from troggle.alwaysUseRequestContext import render_response
 
 # Deprecated in 1.11.29
diff --git a/core/views_other.py b/core/views_other.py
index 67726cc..0b3e6c3 100644
--- a/core/views_other.py
+++ b/core/views_other.py
@@ -29,7 +29,7 @@ def troggle404(request): # cannot get this to work. Handler404 in urls.py not ri
     '''
     context = RequestContext(request)
     #context['caves'] = Cave.objects.all()
-    return render_to_response('404.html', context.flatten())
+    return render(request, ('404.html', context.flatten()))
 
 def showrequest(request):
     return HttpResponse(request.GET)
diff --git a/core/views_statistics.py b/core/views_statistics.py
index 45b963c..3102d51 100644
--- a/core/views_statistics.py
+++ b/core/views_statistics.py
@@ -5,7 +5,7 @@ from collections import OrderedDict
 
 import django.db.models
 from django.db.models import Min, Max
-from django.shortcuts import render, render_to_response
+from django.shortcuts import render
 from django.template import Context, loader
 from django.template.defaultfilters import slugify
 from django.utils import timezone
diff --git a/core/views_survex.py b/core/views_survex.py
index 9bec952..ef554aa 100644
--- a/core/views_survex.py
+++ b/core/views_survex.py
@@ -5,12 +5,9 @@ import difflib
 from pathlib import Path
 
 from django import forms
-from django.http import HttpResponseRedirect, HttpResponse
-from django.template import RequestContext
-from django.shortcuts import render_to_response, render
-#from django.core.context_processors import csrf
+from django.http import HttpResponseRedirect, HttpResponse, Http404
+from django.shortcuts import render
 from django.template.context_processors import csrf
-from django.http import HttpResponse, Http404
 from django.views.decorators.csrf import ensure_csrf_cookie
 
 from django.core.exceptions import ObjectDoesNotExist, MultipleObjectsReturned
@@ -382,8 +379,6 @@ def survexcavesingle(request, survex_cave):
     kataster numbers are not unique across areas. Fix this.
     '''
     sc = survex_cave
-    context = RequestContext(request)
-    context_dict = {}
     try:
         cave = Cave.objects.get(kataster_number=sc) # This may not be unique.
         return render(request, 'svxcavesingle.html', {'settings': settings, "cave":cave })