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-rw-r--r--cobbler/item_system.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/cobbler/item_system.py b/cobbler/item_system.py
index f5b16ca..dadd8d1 100644
--- a/cobbler/item_system.py
+++ b/cobbler/item_system.py
@@ -153,7 +153,7 @@ class System(item.Item):
if type(name) != type(""):
raise CX(_("name must be a string"))
for x in name:
- if not x.isalnum() and not x in [ "-", ".", ":", "+" ] :
+ if not x.isalnum() and not x in [ "_", "-", ".", ":", "+" ] :
raise CX(_("invalid characters in name"))
if utils.is_mac(name):