diff --git a/AKModel/locale/de_DE/LC_MESSAGES/django.po b/AKModel/locale/de_DE/LC_MESSAGES/django.po
index 024239b81eaa275547d6f07f784e823d36e74ba8..2b85f9cabf45d7c2398782df49543b7eb1d000de 100644
--- a/AKModel/locale/de_DE/LC_MESSAGES/django.po
+++ b/AKModel/locale/de_DE/LC_MESSAGES/django.po
@@ -2,7 +2,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2021-05-15 14:34+0000\n"
+"POT-Creation-Date: 2021-10-28 16:39+0000\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
@@ -519,8 +519,8 @@ msgid "Capacity"
 msgstr "Kapazität"
 
 #: AKModel/models.py:331
-msgid "Maximum number of people"
-msgstr "Maximale Personenzahl"
+msgid "Maximum number of people (-1 for unlimited)."
+msgstr "Maximale Personenzahl (-1 wenn unbeschränkt)."
 
 #: AKModel/models.py:332
 msgid "Properties"
diff --git a/AKModel/migrations/0047_room_capacity_help.py b/AKModel/migrations/0047_room_capacity_help.py
new file mode 100644
index 0000000000000000000000000000000000000000..d47591d25f765f1543bf45201a6b356ca851b3ed
--- /dev/null
+++ b/AKModel/migrations/0047_room_capacity_help.py
@@ -0,0 +1,18 @@
+# Generated by Django 3.1.8 on 2021-10-28 16:34
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('AKModel', '0046_present_by_default'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='room',
+            name='capacity',
+            field=models.IntegerField(help_text='Maximum number of people (-1 for unlimited).', verbose_name='Capacity'),
+        ),
+    ]
diff --git a/AKModel/models.py b/AKModel/models.py
index d0d777841f75979c0fdc23e0166154a6f66216ac..de03c22daeffd3506055f4ec4c43c35a55ee0099 100644
--- a/AKModel/models.py
+++ b/AKModel/models.py
@@ -328,7 +328,7 @@ class Room(models.Model):
     name = models.CharField(max_length=64, verbose_name=_('Name'), help_text=_('Name or number of the room'))
     location = models.CharField(max_length=256, blank=True, verbose_name=_('Location'),
                                 help_text=_('Name or number of the location'))
-    capacity = models.IntegerField(verbose_name=_('Capacity'), help_text=_('Maximum number of people'))
+    capacity = models.IntegerField(verbose_name=_('Capacity'), help_text=_('Maximum number of people (-1 for unlimited).'))
     properties = models.ManyToManyField(to=AKRequirement, blank=True, verbose_name=_('Properties'),
                                         help_text=_('AK requirements fulfilled by the room'))