diff --git a/include/enotify.php b/include/enotify.php
index 0e91ca7da1..0777a72f4f 100644
--- a/include/enotify.php
+++ b/include/enotify.php
@@ -31,7 +31,7 @@ use Friendica\Protocol\Activity;
 function notification($params)
 {
 	/** @var string the common prefix of a notification subject */
-	$SUBJECT_PREFIX = DI::l10n()->t('[Friendica:Notify]');
+	$subjectPrefix = DI::l10n()->t('[Friendica:Notify]');
 
 	// Temporary logging for finding the origin
 	if (!isset($params['uid'])) {
@@ -109,7 +109,7 @@ function notification($params)
 		$itemlink = $siteurl.'/message/'.$params['item']['id'];
 		$params["link"] = $itemlink;
 
-		$subject = $l10n->t( '%s New mail received at %s', $SUBJECT_PREFIX, $sitename);
+		$subject = $l10n->t( '%s New mail received at %s', $subjectPrefix, $sitename);
 
 		$preamble = $l10n->t('%1$s sent you a new private message at %2$s.', $params['source_name'], $sitename);
 		$epreamble = $l10n->t('%1$s sent you %2$s.', '[url='.$params['source_link'].']'.$params['source_name'].'[/url]', '[url=' . $itemlink . ']' . $l10n->t('a private message').'[/url]');
@@ -198,11 +198,11 @@ function notification($params)
 		// Before this we have the name of the replier on the subject rendering
 		// different subjects for messages on the same thread.
 		if ($params['activity']['explicit_tagged']) {
-			$subject = $l10n->t('%s %s tagged you', $SUBJECT_PREFIX, $params['source_name']);
+			$subject = $l10n->t('%s %s tagged you', $subjectPrefix, $params['source_name']);
 
 			$preamble = $l10n->t('%1$s tagged you at %2$s', $params['source_name'], $sitename);
 		} else {
-			$subject = $l10n->t('%s Comment to conversation #%1$d by %2$s', $SUBJECT_PREFIX, $parent_id, $params['source_name']);
+			$subject = $l10n->t('%s Comment to conversation #%1$d by %2$s', $subjectPrefix, $parent_id, $params['source_name']);
 
 			$preamble = $l10n->t('%s commented on an item/conversation you have been following.', $params['source_name']);
 		}
@@ -216,7 +216,7 @@ function notification($params)
 	}
 
 	if ($params['type'] == Notify\Type::WALL) {
-		$subject = $l10n->t('%s %s posted to your profile wall', $SUBJECT_PREFIX, $params['source_name']);
+		$subject = $l10n->t('%s %s posted to your profile wall', $subjectPrefix, $params['source_name']);
 
 		$preamble = $l10n->t('%1$s posted to your profile wall at %2$s', $params['source_name'], $sitename);
 		$epreamble = $l10n->t('%1$s posted to [url=%2$s]your wall[/url]',
@@ -231,7 +231,7 @@ function notification($params)
 	}
 
 	if ($params['type'] == Notify\Type::SHARE) {
-		$subject = $l10n->t('%s Friendica:Notify] %s shared a new post', $SUBJECT_PREFIX, $params['source_name']);
+		$subject = $l10n->t('%s %s shared a new post', $subjectPrefix, $params['source_name']);
 
 		$preamble = $l10n->t('%1$s shared a new post at %2$s', $params['source_name'], $sitename);
 		$epreamble = $l10n->t('%1$s [url=%2$s]shared a post[/url].',
@@ -246,7 +246,7 @@ function notification($params)
 	}
 
 	if ($params['type'] == Notify\Type::POKE) {
-		$subject = $l10n->t('%s %1$s poked you', $SUBJECT_PREFIX, $params['source_name']);
+		$subject = $l10n->t('%s %1$s poked you', $subjectPrefix, $params['source_name']);
 
 		$preamble = $l10n->t('%1$s poked you at %2$s', $params['source_name'], $sitename);
 		$epreamble = $l10n->t('%1$s [url=%2$s]poked you[/url].',
@@ -266,7 +266,7 @@ function notification($params)
 
 	if ($params['type'] == Notify\Type::TAG_SHARE) {
 		$itemlink =  $params['link'];
-		$subject = $l10n->t('%s %s tagged your post', $SUBJECT_PREFIX, $params['source_name']);
+		$subject = $l10n->t('%s %s tagged your post', $subjectPrefix, $params['source_name']);
 
 		$preamble = $l10n->t('%1$s tagged your post at %2$s', $params['source_name'], $sitename);
 		$epreamble = $l10n->t('%1$s tagged [url=%2$s]your post[/url]',
@@ -281,7 +281,7 @@ function notification($params)
 
 	if ($params['type'] == Notify\Type::INTRO) {
 		$itemlink = $params['link'];
-		$subject = $l10n->t('%s Introduction received', $SUBJECT_PREFIX);
+		$subject = $l10n->t('%s Introduction received', $subjectPrefix);
 
 		$preamble = $l10n->t('You\'ve received an introduction from \'%1$s\' at %2$s', $params['source_name'], $sitename);
 		$epreamble = $l10n->t('You\'ve received [url=%1$s]an introduction[/url] from %2$s.',
@@ -298,7 +298,7 @@ function notification($params)
 		switch ($params['verb']) {
 			case Activity::FRIEND:
 				// someone started to share with user (mostly OStatus)
-				$subject = $l10n->t('%s A new person is sharing with you', $SUBJECT_PREFIX);
+				$subject = $l10n->t('%s A new person is sharing with you', $subjectPrefix);
 
 				$preamble = $l10n->t('%1$s is sharing with you at %2$s', $params['source_name'], $sitename);
 				$epreamble = $l10n->t('%1$s is sharing with you at %2$s',
@@ -308,7 +308,7 @@ function notification($params)
 				break;
 			case Activity::FOLLOW:
 				// someone started to follow the user (mostly OStatus)
-				$subject = $l10n->t('%s You have a new follower', $SUBJECT_PREFIX);
+				$subject = $l10n->t('%s You have a new follower', $subjectPrefix);
 
 				$preamble = $l10n->t('You have a new follower at %2$s : %1$s', $params['source_name'], $sitename);
 				$epreamble = $l10n->t('You have a new follower at %2$s : %1$s',
@@ -324,7 +324,7 @@ function notification($params)
 
 	if ($params['type'] == Notify\Type::SUGGEST) {
 		$itemlink =  $params['link'];
-		$subject = $l10n->t('%s Friend suggestion received', $SUBJECT_PREFIX);
+		$subject = $l10n->t('%s Friend suggestion received', $subjectPrefix);
 
 		$preamble = $l10n->t('You\'ve received a friend suggestion from \'%1$s\' at %2$s', $params['source_name'], $sitename);
 		$epreamble = $l10n->t('You\'ve received [url=%1$s]a friend suggestion[/url] for %2$s from %3$s.',
@@ -345,7 +345,7 @@ function notification($params)
 	if ($params['type'] == Notify\Type::CONFIRM) {
 		if ($params['verb'] == Activity::FRIEND) { // mutual connection
 			$itemlink =  $params['link'];
-			$subject = $l10n->t('%s Connection accepted', $SUBJECT_PREFIX);
+			$subject = $l10n->t('%s Connection accepted', $subjectPrefix);
 
 			$preamble = $l10n->t('\'%1$s\' has accepted your connection request at %2$s', $params['source_name'], $sitename);
 			$epreamble = $l10n->t('%2$s has accepted your [url=%1$s]connection request[/url].',
@@ -360,7 +360,7 @@ function notification($params)
 			$hsitelink = sprintf($sitelink, '<a href="'.$siteurl.'">'.$sitename.'</a>');
 		} else { // ACTIVITY_FOLLOW
 			$itemlink =  $params['link'];
-			$subject = $l10n->t('%s Connection accepted', $SUBJECT_PREFIX);
+			$subject = $l10n->t('%s Connection accepted', $subjectPrefix);
 
 			$preamble = $l10n->t('\'%1$s\' has accepted your connection request at %2$s', $params['source_name'], $sitename);
 			$epreamble = $l10n->t('%2$s has accepted your [url=%1$s]connection request[/url].',