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-rw-r--r--include/datetime.php2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/datetime.php b/include/datetime.php
index 3b1491e4d..f6bf1041e 100644
--- a/include/datetime.php
+++ b/include/datetime.php
@@ -87,7 +87,7 @@ function datetime_convert($from = 'UTC', $to = 'UTC', $s = 'now', $fmt = "Y-m-d
$from = 'UTC';
if($to === '')
$to = 'UTC';
- if($s === '')
+ if($s === '' || (! is_string($s)))
$s = 'now';
// Slight hackish adjustment so that 'zero' datetime actually returns what is intended