diff --git a/conf.d/wato/groups.mk b/conf.d/wato/groups.mk
index 8f0c3f0..742da27 100644
--- a/conf.d/wato/groups.mk
+++ b/conf.d/wato/groups.mk
@@ -2,7 +2,7 @@
 
 if type(define_hostgroups) != dict:
     define_hostgroups = {}
-define_hostgroups.update({'raspi': 'raspi', 'syno': 'syno'})
+define_hostgroups.update({'container': 'container', 'raspi': 'raspi', 'syno': 'syno'})
 
 if type(define_contactgroups) != dict:
     define_contactgroups = {}