diff --git a/src/Model/Post/DeliveryData.php b/src/Model/Post/DeliveryData.php
index 327e6f9121..c1aad730c7 100644
--- a/src/Model/Post/DeliveryData.php
+++ b/src/Model/Post/DeliveryData.php
@@ -86,19 +86,19 @@ class DeliveryData
 
 		switch ($protocol) {
 			case self::ACTIVITYPUB:
-				$increments[] = ["`activitypub` = `activitypub` + 1"];
+				$increments[] = "`activitypub` = `activitypub` + 1";
 				break;
 			case self::DFRN:
-				$increments[] = ["`dfrn` = `dfrn` + 1"];
+				$increments[] = "`dfrn` = `dfrn` + 1";
 				break;
 			case self::LEGACY_DFRN:
-				$increments[] = ["`legacy_dfrn` = `legacy_dfrn` + 1"];
+				$increments[] = "`legacy_dfrn` = `legacy_dfrn` + 1";
 				break;
 			case self::DIASPORA:
-				$increments[] = ["`diaspora` = `diaspora` + 1"];
+				$increments[] = "`diaspora` = `diaspora` + 1";
 				break;
 			case self::OSTATUS:
-				$increments[] = ["`ostatus` = `ostatus` + 1"];
+				$increments[] = "`ostatus` = `ostatus` + 1";
 				break;
 		}
 
diff --git a/tests/src/Database/DatabaseTest.php b/tests/src/Database/DatabaseTest.php
index 47d4032209..e906834614 100644
--- a/tests/src/Database/DatabaseTest.php
+++ b/tests/src/Database/DatabaseTest.php
@@ -85,4 +85,19 @@ class DatabaseTest extends FixtureTest
 		]));
 		self::assertEquals(1, $db->selectFirst('gserver', ['registered-users'], ['nurl' => 'http://friendica.local'])['registered-users']);
 	}
+
+	public function testUpdateWithArray()
+	{
+		$db = $this->getDbInstance();
+
+		self::assertTrue($db->update('gserver', ['active-week-users' => 0, 'registered-users' => 0], ['nurl' => 'http://friendica.local']));
+
+		$fields = ["`registered-users` = `registered-users` + 1"];
+		$fields[] = "`active-week-users` = `active-week-users` + 2";
+
+		self::assertTrue($db->update('gserver', $fields, ['nurl' => 'http://friendica.local']));
+
+		self::assertEquals(2, $db->selectFirst('gserver', ['active-week-users'], ['nurl' => 'http://friendica.local'])['active-week-users']);
+		self::assertEquals(1, $db->selectFirst('gserver', ['registered-users'], ['nurl' => 'http://friendica.local'])['registered-users']);
+	}
 }