diff --git a/shiftregister/app/templates/partials/shift_listitem.html b/shiftregister/app/templates/partials/shift_listitem.html
index bb4ade2..ef64939 100644
--- a/shiftregister/app/templates/partials/shift_listitem.html
+++ b/shiftregister/app/templates/partials/shift_listitem.html
@@ -1,4 +1,5 @@
 {% load shift_extras %}
+
 <div class="column is-one-quarter">
     <div class="box">
         <div class="content">
diff --git a/shiftregister/app/templates/shift.html b/shiftregister/app/templates/shift.html
index 16b67d5..4dffdec 100644
--- a/shiftregister/app/templates/shift.html
+++ b/shiftregister/app/templates/shift.html
@@ -1,4 +1,5 @@
 {% extends "helper_base.html" %}
+
 {% load shift_extras %}
 
 {% block title %}Schichtansicht{% endblock %}
diff --git a/shiftregister/app/templatetags/shift_extras.py b/shiftregister/app/templatetags/shift_extras.py
index 92aaccf..c6e2a42 100644
--- a/shiftregister/app/templatetags/shift_extras.py
+++ b/shiftregister/app/templatetags/shift_extras.py
@@ -5,8 +5,8 @@ register = template.Library()
 
 @register.filter(name="duration")
 def duration(value):
-    secs = value.total_seconds()
-    hours = int(secs // (60 * 60))
+    secs = int(value.total_seconds())
+    hours = secs // (60 * 60)
     secs = secs % (hours * 60 * 60)
-    minutes = int(secs // 60)
-    return f"{hours}:{minutes:02d}"
+    minutes = secs // 60
+    return f"{hours}:{minutes:02d}h"