diff --git a/nitter/nitter.php b/nitter/nitter.php
index 13b823b4..28bd9857 100644
--- a/nitter/nitter.php
+++ b/nitter/nitter.php
@@ -65,11 +65,11 @@ function nitter_render(&$a, &$o)
 	$nitter = DI::config()->get('nitter', 'server', 'https://nitter.net');
 	if (strstr($o['html'], 'https://mobile.twitter.com')) {
 		$o['html'] = str_replace('https://mobile.twitter.com', $nitter, $o['html']);
-		$replace = true;
+		$replaced = true;
 	}
 	if (strstr($o['html'], 'https://twitter.com')) {
 		$o['html'] = str_replace('https://twitter.com', $nitter, $o['html']);
-		$replace = true;
+		$replaced = true;
 	}
 	if ($replaced) {
 		$o['html'] .= '<hr><p>' . DI::l10n()->t('Links to Twitter in this posting were replaced by links to the Nitter instance at %s', $nitter) . '</p>';