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-rw-r--r--actions/twitapihelp.php2
1 files changed, 1 insertions, 1 deletions
diff --git a/actions/twitapihelp.php b/actions/twitapihelp.php
index d268b7c82..f0e9adfdb 100644
--- a/actions/twitapihelp.php
+++ b/actions/twitapihelp.php
@@ -32,7 +32,7 @@ class TwitapihelpAction extends TwitterapiAction {
if ($apidata['content-type'] == 'xml') {
$this->init_document('xml');
- common_element('ok', NULL, 'true');
+ common_element('ok', null, 'true');
$this->end_document('xml');
} elseif ($apidata['content-type'] == 'json') {
$this->init_document('json');