diff --git a/src/Contact/Introduction/Depository/Introduction.php b/src/Contact/Introduction/Depository/Introduction.php
index 3a4498cf3..249252d44 100644
--- a/src/Contact/Introduction/Depository/Introduction.php
+++ b/src/Contact/Introduction/Depository/Introduction.php
@@ -68,7 +68,6 @@ class Introduction extends BaseDepository
 	{
 		return [
 			'uid'         => $introduction->uid,
-			'fid'         => $introduction->fid,
 			'contact-id'  => $introduction->cid,
 			'suggest-cid' => $introduction->sid,
 			'knowyou'     => $introduction->knowyou ? 1 : 0,
diff --git a/src/Contact/Introduction/Entity/Introduction.php b/src/Contact/Introduction/Entity/Introduction.php
index 119fd1e06..7485f8181 100644
--- a/src/Contact/Introduction/Entity/Introduction.php
+++ b/src/Contact/Introduction/Entity/Introduction.php
@@ -26,7 +26,6 @@ use Friendica\BaseEntity;
 /**
  * @property-read int $uid
  * @property-read int $sid
- * @property-read int|null $fid
  * @property-read int|null $cid
  * @property-read bool $knowyou
  * @property-read bool $duplex
@@ -43,8 +42,6 @@ class Introduction extends BaseEntity
 	/** @var int */
 	protected $sid;
 	/** @var int|null */
-	protected $fid;
-	/** @var int|null */
 	protected $cid;
 	/** @var bool */
 	protected $knowyou;
@@ -64,7 +61,6 @@ class Introduction extends BaseEntity
 	/**
 	 * @param int       $uid
 	 * @param int       $sid
-	 * @param int|null  $fid
 	 * @param int|null  $cid
 	 * @param bool      $knowyou
 	 * @param bool      $duplex
@@ -74,18 +70,18 @@ class Introduction extends BaseEntity
 	 * @param bool      $ignore
 	 * @param int|null  $id
 	 */
-	public function __construct(int $uid, int $sid, ?int $fid, ?int $cid, bool $knowyou, bool $duplex, string $note, string $hash, \DateTime $datetime, bool $ignore, ?int $id)
+	public function __construct(int $uid, int $sid, ?int $cid, bool $knowyou, bool $duplex, string $note, string $hash, \DateTime $datetime, bool $ignore, ?int $id)
 	{
-		$this->uid     = $uid;
-		$this->sid     = $sid;
-		$this->fid     = $fid;
-		$this->cid     = $cid;
-		$this->knowyou = $knowyou;
-		$this->duplex  = $duplex;
-		$this->note    = $note;
-		$this->hash    = $hash;
-		$this->ignore  = $ignore;
-		$this->id      = $id;
+		$this->uid      = $uid;
+		$this->sid      = $sid;
+		$this->cid      = $cid;
+		$this->knowyou  = $knowyou;
+		$this->duplex   = $duplex;
+		$this->note     = $note;
+		$this->hash     = $hash;
+		$this->datetime = $datetime;
+		$this->ignore   = $ignore;
+		$this->id       = $id;
 	}
 
 	/**
diff --git a/src/Contact/Introduction/Factory/Introduction.php b/src/Contact/Introduction/Factory/Introduction.php
index 35275de7f..8aa5b7591 100644
--- a/src/Contact/Introduction/Factory/Introduction.php
+++ b/src/Contact/Introduction/Factory/Introduction.php
@@ -37,7 +37,6 @@ class Introduction extends BaseFactory implements ICanCreateFromTableRow
 		return new Entity\Introduction(
 			$row['uid'] ?? 0,
 			$row['suggest-cid'] ?? 0,
-			$row['fid'] ?? null,
 			$row['contact-id'] ?? null,
 			!empty($row['knowyou']),
 			!empty($row['duplex']),
@@ -51,18 +50,16 @@ class Introduction extends BaseFactory implements ICanCreateFromTableRow
 
 	public function createNew(
 		int $uid,
-		int $cid,
+		int $sid,
 		string $note,
-		int $fid = null,
-		int $sid = null,
+		int $cid = null,
 		bool $knowyou = false,
 		bool $duplex = false
 	): Entity\Introduction {
 		return $this->createFromTableRow([
 			'uid'         => $uid,
-			'fid'         => $fid,
-			'contact-id'  => $cid,
 			'suggest-cid' => $sid,
+			'contact-id'  => $cid,
 			'knowyou'     => $knowyou,
 			'duplex'      => $duplex,
 			'note'        => $note,
@@ -72,7 +69,7 @@ class Introduction extends BaseFactory implements ICanCreateFromTableRow
 		]);
 	}
 
-	public function createDummy(int $id): Entity\Introduction
+	public function createDummy(?int $id): Entity\Introduction
 	{
 		return $this->createFromTableRow(['id' => $id]);
 	}
diff --git a/tests/src/Contact/Introduction/Factory/IntroductionTest.php b/tests/src/Contact/Introduction/Factory/IntroductionTest.php
new file mode 100644
index 000000000..9f45c54b0
--- /dev/null
+++ b/tests/src/Contact/Introduction/Factory/IntroductionTest.php
@@ -0,0 +1,117 @@
+<?php
+
+namespace Friendica\Test\src\Contact\Introduction\Factory;
+
+use Friendica\Contact\Introduction\Factory\Introduction;
+use PHPUnit\Framework\TestCase;
+use Psr\Log\NullLogger;
+
+class IntroductionTest extends TestCase
+{
+	public function dataRow()
+	{
+		return [
+			'default' => [
+				'input' => [
+					'uid'         => 42,
+					'suggest-cid' => 13,
+					'contact-id'  => 24,
+					'knowyou'     => 1,
+					'duplex'      => 1,
+					'note'        => 'a note',
+					'hash'        => '12345',
+					'datetime'    => '1970-01-01 00:00:00',
+					'ignore'      => 0,
+					'id'          => 56,
+				],
+				'assertion' => [
+					'uid'         => 42,
+					'suggest-cid' => 13,
+					'contact-id'  => 24,
+					'knowyou'     => true,
+					'duplex'      => true,
+					'note'        => 'a note',
+					'hash'        => '12345',
+					'datetime'    => new \DateTime('1970-01-01 00:00:00', new \DateTimeZone('UTC')),
+					'ignore'      => false,
+					'id'          => 56,
+				]
+			],
+			'empty' => [
+				'input' => [
+				],
+				'assertion' => [
+					'uid'         => 0,
+					'suggest-cid' => 0,
+					'contact-id'  => null,
+					'knowyou'     => false,
+					'duplex'      => false,
+					'note'        => '',
+					'ignore'      => false,
+					'id'          => null,
+				]
+			],
+		];
+	}
+
+	public function assertIntro(\Friendica\Contact\Introduction\Entity\Introduction $intro, array $assertion)
+	{
+		self::assertEquals($intro->id, $assertion['id'] ?? null);
+		self::assertEquals($intro->uid, $assertion['uid'] ?? 0);
+		self::assertEquals($intro->sid, $assertion['suggest-cid'] ?? 0);
+		self::assertEquals($intro->cid, $assertion['contact-id'] ?? null);
+		self::assertEquals($intro->knowyou, $assertion['knowyou'] ?? false);
+		self::assertEquals($intro->duplex, $assertion['duplex'] ?? false);
+		self::assertEquals($intro->note, $assertion['note'] ?? '');
+		if (isset($assertion['hash'])) {
+			self::assertEquals($intro->hash, $assertion['hash']);
+		} else {
+			self::assertIsString($intro->hash);
+		}
+		if (isset($assertion['datetime'])) {
+			self::assertEquals($intro->datetime, $assertion['datetime']);
+		} else {
+			self::assertInstanceOf(\DateTime::class, $intro->datetime);
+		}
+		self::assertEquals($intro->ignore, $assertion['ignore'] ?? false);
+	}
+
+	/**
+	 * @dataProvider dataRow
+	 */
+	public function testCreateFromTableRow(array $input, array $assertion)
+	{
+		$factory = new Introduction(new NullLogger());
+
+		$intro = $factory->createFromTableRow($input);
+		$this->assertIntro($intro, $assertion);
+	}
+
+	/**
+	 * @dataProvider dataRow
+	 */
+	public function testCreateNew(array $input, array $assertion)
+	{
+		$factory = new Introduction(new NullLogger());
+
+		$intro = $factory->createNew($input['uid'] ?? 0, $input['sid'] ?? 0, $input['note'] ?? '');
+
+		$this->assertIntro($intro, [
+			'uid'  => $input['uid'] ?? 0,
+			'sid'  => $input['sid'] ?? 0,
+			'note' => $input['note'] ?? '',
+		]);
+	}
+
+	/**
+	 * @dataProvider dataRow
+	 */
+	public function testCreateDummy(array $input, array $assertion)
+	{
+		$factory = new Introduction(new NullLogger());
+
+		$intro = $factory->createDummy($input['id'] ?? null);
+
+		$this->assertIntro($intro, ['id' => $input['id'] ?? null]);
+	}
+}