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-rw-r--r--lib/action.php2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/action.php b/lib/action.php
index cc4f4aad0..0a607b42d 100644
--- a/lib/action.php
+++ b/lib/action.php
@@ -974,7 +974,7 @@ class Action extends HTMLOutputter // lawsuit
if (is_null($arg)) {
return $def;
- } else if (in_array($arg, array('true', 'yes', '1'))) {
+ } else if (in_array($arg, array('true', 'yes', '1', 'on'))) {
return true;
} else if (in_array($arg, array('false', 'no', '0'))) {
return false;