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-rw-r--r--phpBB/includes/functions_convert.php2
1 files changed, 1 insertions, 1 deletions
diff --git a/phpBB/includes/functions_convert.php b/phpBB/includes/functions_convert.php
index 8aa8f597e8..f38dd6fec3 100644
--- a/phpBB/includes/functions_convert.php
+++ b/phpBB/includes/functions_convert.php
@@ -1194,7 +1194,7 @@ function restore_config($schema)
{
if (preg_match('/(.*)\((.*)\)/', $src, $m))
{
- $var = (empty($m[2]) || empty($convert_config[$m[2]])) ? '' : "'" . addslashes($convert_config[$m[2]]) . "'";
+ $var = (empty($m[2]) || empty($convert_config[$m[2]])) ? "''" : "'" . addslashes($convert_config[$m[2]]) . "'";
$exec = '$config_value = ' . $m[1] . '(' . $var . ');';
eval($exec);
}