diff --git a/coinmanager/coinc/cache.py b/coinmanager/coinc/cache.py
index 79a5ef0..7c2fd49 100644
--- a/coinmanager/coinc/cache.py
+++ b/coinmanager/coinc/cache.py
@@ -27,17 +27,17 @@ from django.http import Http404
 from .models import Coin
 
 
-def get_last_modified_index(request):
-    return cache.get(f'last_modified_index', set_last_modified_index())
+def get_last_modified_coin(request):
+    return cache.get('last_modified_coin', set_last_modified_coin())
 
 
-def set_last_modified_index():
+def set_last_modified_coin():
     ''' set and return the datetime of the last coin added '''
     try:
         last_modified = Coin.objects.latest('date_modified').date_modified
     except Coin.DoesNotExist:
         raise Http404(f'Das Land "{name_iso}" existiert nicht')
-    cache.set(f'last_modified_index', last_modified)
+    cache.set('last_modified_coin', last_modified)
     return last_modified
 
 
diff --git a/coinmanager/coinc/views.py b/coinmanager/coinc/views.py
index 35eff64..98bdfaa 100644
--- a/coinmanager/coinc/views.py
+++ b/coinmanager/coinc/views.py
@@ -27,13 +27,13 @@ from django.template import loader
 from django.template.defaultfilters import register
 from django.views.decorators.http import condition
 
-from .cache import (get_last_modified_index,   set_last_modified_index,
+from .cache import (get_last_modified_coin,   set_last_modified_coin,
                     get_last_modified_country, set_last_modified_country)
 from .models import Country, Stamp, Coin, User
 from .helper import total_coin_sum, coin_sum_of_
 
 
-@condition(last_modified_func=get_last_modified_index)
+@condition(last_modified_func=get_last_modified_coin)
 def index(request):
     ''' index view '''
 
@@ -378,7 +378,7 @@ def add_coin(request):
             in_collector = ec,
             exists       = exists)
 
-    set_last_modified_index()
+    set_last_modified_coin()
     set_last_modified_country(country.name_iso)
     return response()