diff --git a/label/templates/label/releases.html b/label/templates/label/releases.html
index 08e9d1c..e20c8df 100644
--- a/label/templates/label/releases.html
+++ b/label/templates/label/releases.html
@@ -14,7 +14,7 @@
 {% for release in releases %}
   <tr class="release">
     <td>
-      {{ release.ident }}
+      {{ release.tag }}
     </td>
 
     <td>
@@ -24,7 +24,7 @@
     </td>
 
     <td>
-      <a href="{% url 'release' release.id %}">{{ release.title }}</a>
+      <a href="{% url 'release' release.tag_lower %}">{{ release.title }}</a>
       {% if release.release_type == 1 %}(EP){% endif %}
       {% if release.release_type == 2 %}(Split){% endif %}
       {% if release.release_type == 3 %}(Demo){% endif %}
diff --git a/label/tools.py b/label/tools.py
index 0444773..40a90b8 100644
--- a/label/tools.py
+++ b/label/tools.py
@@ -1,6 +1,12 @@
-def get_catalog_tag(ident):
+def get_catalog_tag_from_id(ident):
     return "IDRE{:0>3d}".format(ident)
 
+def get_id_from_catalog_tag(tag):
+    try:
+        return int(tag[4:])
+    except ValueError:
+        return -1
+
 
 def get_contribs(contributors):
     contrib_list = []
diff --git a/label/views.py b/label/views.py
index bdea82e..6a3328a 100644
--- a/label/views.py
+++ b/label/views.py
@@ -27,10 +27,12 @@ def releases(request):
 
     releases_and_infos = []
     for release in releases:
+        release_tag = tools.get_catalog_tag_from_id(release.ident)
         releases_and_infos.append({
             "id": release.id,
             "release_type": release.release_type,
-            "ident": tools.get_catalog_tag(release.ident),
+            "tag": release_tag,
+            "tag_lower": release_tag.lower(),
             "title": release.title,
             "contribs": tools.get_contribs(release.contributors.all()),
             "year": release.year
@@ -40,8 +42,9 @@ def releases(request):
     return render(request, "label/releases.html", context)
 
 
-def release(request, rid):
-    release = Release.objects.get(id = rid)
+def release(request, tag):
+    ident = tools.get_id_from_catalog_tag(tag)
+    release = get_object_or_404(Release, ident = ident)
     contribs = tools.get_contribs(release.contributors.all())
     context = { "release": release, "contribs": contribs }
     return render(request, "label/release.html", context)