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-rw-r--r--interface-definitions/cron.xml2
1 files changed, 1 insertions, 1 deletions
diff --git a/interface-definitions/cron.xml b/interface-definitions/cron.xml
index 8e4c1294a..65b95c5a4 100644
--- a/interface-definitions/cron.xml
+++ b/interface-definitions/cron.xml
@@ -45,7 +45,7 @@
<description>Execution interval in days</description>
</valueHelp>
<constraint>
- <regex>[1-9]([0-9]+)([mhd]{0,1})</regex>
+ <regex>[1-9]([0-9]*)([mhd]{0,1})</regex>
</constraint>
</properties>
</leafNode>