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-rw-r--r--modules-available/rebootcontrol/pages/subnet.inc.php2
1 files changed, 1 insertions, 1 deletions
diff --git a/modules-available/rebootcontrol/pages/subnet.inc.php b/modules-available/rebootcontrol/pages/subnet.inc.php
index c1631cbd..3e593505 100644
--- a/modules-available/rebootcontrol/pages/subnet.inc.php
+++ b/modules-available/rebootcontrol/pages/subnet.inc.php
@@ -24,7 +24,7 @@ class SubPage
User::assertPermission('subnet.edit');
$cidr = Request::post('cidr', Request::REQUIRED, 'string');
$range = IpUtil::parseCidr($cidr);
- if ($range === false) {
+ if ($range === null) {
Message::addError('invalid-cidr', $cidr);
return;
}