diff --git a/src/Contact/Introduction/Depository/Introduction.php b/src/Contact/Introduction/Depository/Introduction.php
index 249252d44a..b9752d8112 100644
--- a/src/Contact/Introduction/Depository/Introduction.php
+++ b/src/Contact/Introduction/Depository/Introduction.php
@@ -147,12 +147,20 @@ class Introduction extends BaseDepository
 		}
 	}
 
-	public function existsForContact(int $cid, int $uid): bool
+	/**
+	 * Checks, if the suggested contact already exists for the user
+	 *
+	 * @param int $sid
+	 * @param int $uid
+	 *
+	 * @return bool
+	 */
+	public function suggestionExistsForUser(int $sid, int $uid): bool
 	{
 		try {
-			return $this->exists(['uid' => $uid, 'suggest-cid' => $cid]);
+			return $this->exists(['uid' => $uid, 'suggest-cid' => $sid]);
 		} catch (\Exception $e) {
-			throw new IntroductionPersistenceException(sprintf('Cannot check Introductions for contact %d and user %d', $cid, $uid), $e);
+			throw new IntroductionPersistenceException(sprintf('Cannot check suggested Introduction for contact %d and user %d', $sid, $uid), $e);
 		}
 	}
 
diff --git a/src/Contact/Introduction/Entity/Introduction.php b/src/Contact/Introduction/Entity/Introduction.php
index 7485f8181b..af9db729aa 100644
--- a/src/Contact/Introduction/Entity/Introduction.php
+++ b/src/Contact/Introduction/Entity/Introduction.php
@@ -25,8 +25,8 @@ use Friendica\BaseEntity;
 
 /**
  * @property-read int $uid
- * @property-read int $sid
- * @property-read int|null $cid
+ * @property-read int $cid
+ * @property-read int|null $sid
  * @property-read bool $knowyou
  * @property-read bool $duplex
  * @property-read string $note
@@ -40,9 +40,9 @@ class Introduction extends BaseEntity
 	/** @var int */
 	protected $uid;
 	/** @var int */
-	protected $sid;
-	/** @var int|null */
 	protected $cid;
+	/** @var int|null */
+	protected $sid;
 	/** @var bool */
 	protected $knowyou;
 	/** @var bool */
@@ -60,8 +60,8 @@ class Introduction extends BaseEntity
 
 	/**
 	 * @param int       $uid
-	 * @param int       $sid
-	 * @param int|null  $cid
+	 * @param int       $cid
+	 * @param int|null  $sid
 	 * @param bool      $knowyou
 	 * @param bool      $duplex
 	 * @param string    $note
@@ -70,11 +70,11 @@ class Introduction extends BaseEntity
 	 * @param bool      $ignore
 	 * @param int|null  $id
 	 */
-	public function __construct(int $uid, int $sid, ?int $cid, bool $knowyou, bool $duplex, string $note, string $hash, \DateTime $datetime, bool $ignore, ?int $id)
+	public function __construct(int $uid, int $cid, ?int $sid, bool $knowyou, bool $duplex, string $note, string $hash, \DateTime $datetime, bool $ignore, ?int $id)
 	{
 		$this->uid      = $uid;
-		$this->sid      = $sid;
 		$this->cid      = $cid;
+		$this->sid      = $sid;
 		$this->knowyou  = $knowyou;
 		$this->duplex   = $duplex;
 		$this->note     = $note;
diff --git a/src/Contact/Introduction/Factory/Introduction.php b/src/Contact/Introduction/Factory/Introduction.php
index 8aa5b7591a..57598f5e80 100644
--- a/src/Contact/Introduction/Factory/Introduction.php
+++ b/src/Contact/Introduction/Factory/Introduction.php
@@ -36,8 +36,8 @@ class Introduction extends BaseFactory implements ICanCreateFromTableRow
 	{
 		return new Entity\Introduction(
 			$row['uid'] ?? 0,
-			$row['suggest-cid'] ?? 0,
-			$row['contact-id'] ?? null,
+			$row['contact-id'] ?? 0,
+			$row['suggest-cid'] ?? null,
 			!empty($row['knowyou']),
 			!empty($row['duplex']),
 			$row['note'] ?? '',
@@ -50,9 +50,9 @@ class Introduction extends BaseFactory implements ICanCreateFromTableRow
 
 	public function createNew(
 		int $uid,
-		int $sid,
+		int $cid,
 		string $note,
-		int $cid = null,
+		int $sid = null,
 		bool $knowyou = false,
 		bool $duplex = false
 	): Entity\Introduction {
diff --git a/src/Protocol/DFRN.php b/src/Protocol/DFRN.php
index 9246d85833..a9918bbd02 100644
--- a/src/Protocol/DFRN.php
+++ b/src/Protocol/DFRN.php
@@ -1352,7 +1352,7 @@ class DFRN
 		}
 
 		// Quit if we already have an introduction for this person
-		if (DI::intro()->existsForContact($cid, $uid)) {
+		if (DI::intro()->suggestionExistsForUser($cid, $uid)) {
 			return false;
 		}
 
diff --git a/tests/src/Contact/Introduction/Factory/IntroductionTest.php b/tests/src/Contact/Introduction/Factory/IntroductionTest.php
index 9f45c54b06..529d2720ef 100644
--- a/tests/src/Contact/Introduction/Factory/IntroductionTest.php
+++ b/tests/src/Contact/Introduction/Factory/IntroductionTest.php
@@ -42,8 +42,8 @@ class IntroductionTest extends TestCase
 				],
 				'assertion' => [
 					'uid'         => 0,
-					'suggest-cid' => 0,
-					'contact-id'  => null,
+					'contact-id'  => 0,
+					'suggest-cid' => null,
 					'knowyou'     => false,
 					'duplex'      => false,
 					'note'        => '',
@@ -58,8 +58,8 @@ class IntroductionTest extends TestCase
 	{
 		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->cid, $assertion['contact-id'] ?? 0);
+		self::assertEquals($intro->sid, $assertion['suggest-cid'] ?? null);
 		self::assertEquals($intro->knowyou, $assertion['knowyou'] ?? false);
 		self::assertEquals($intro->duplex, $assertion['duplex'] ?? false);
 		self::assertEquals($intro->note, $assertion['note'] ?? '');
@@ -94,12 +94,12 @@ class IntroductionTest extends TestCase
 	{
 		$factory = new Introduction(new NullLogger());
 
-		$intro = $factory->createNew($input['uid'] ?? 0, $input['sid'] ?? 0, $input['note'] ?? '');
+		$intro = $factory->createNew($input['uid'] ?? 0, $input['cid'] ?? 0, $input['note'] ?? '');
 
 		$this->assertIntro($intro, [
-			'uid'  => $input['uid'] ?? 0,
-			'sid'  => $input['sid'] ?? 0,
-			'note' => $input['note'] ?? '',
+			'uid'        => $input['uid'] ?? 0,
+			'contact-id' => $input['cid'] ?? 0,
+			'note'       => $input['note'] ?? '',
 		]);
 	}