diff --git a/lib/Activity/DeckProvider.php b/lib/Activity/DeckProvider.php
index 78017f3eb5..5ea9a4da82 100644
--- a/lib/Activity/DeckProvider.php
+++ b/lib/Activity/DeckProvider.php
@@ -183,7 +183,6 @@ protected function setSubjects(IEvent $event, $subject, array $parameters) {
 
 		$event->setParsedSubject(str_replace($placeholders, $replacements, $subject))
 			->setRichSubject($subject, $richParameters);
-		$event->setSubject($subject, $parameters);
 	}
 
 	private function getIcon(IEvent $event) {
diff --git a/tests/unit/Activity/DeckProviderTest.php b/tests/unit/Activity/DeckProviderTest.php
index 18399bc633..ed735d4f67 100644
--- a/tests/unit/Activity/DeckProviderTest.php
+++ b/tests/unit/Activity/DeckProviderTest.php
@@ -261,6 +261,8 @@ public function testParseObjectTypeCard() {
 		$this->assertEquals('test string Card', $event->getParsedSubject());
 		$this->assertEquals('test string {card}', $event->getRichSubject());
 		$this->assertEquals('', $event->getMessage());
+		// the subject stays the identifier: notifications reject subjects longer than 64 characters
+		$this->assertEquals(ActivityManager::SUBJECT_CARD_CREATE, $event->getSubject());
 	}
 
 	public function testParseObjectTypeCardWithDiff() {
@@ -312,6 +314,7 @@ public function testParseObjectTypeCardWithDiff() {
 		$this->assertEquals('test string {card}', $event->getRichSubject());
 		$this->assertEquals('BCD', $event->getMessage());
 		$this->assertEquals('BCD', $event->getParsedMessage());
+		$this->assertEquals(ActivityManager::SUBJECT_CARD_UPDATE_DESCRIPTION, $event->getSubject());
 	}
 
 	public function testParseParamForBoard() {