diff --git a/include/security.php b/include/security.php
index e6437db3c..1a5629f93 100644
--- a/include/security.php
+++ b/include/security.php
@@ -5,6 +5,7 @@ use Friendica\Core\Config;
 use Friendica\Core\PConfig;
 use Friendica\Core\System;
 use Friendica\Database\DBM;
+use Friendica\Model\Group;
 
 /**
  * @brief Calculate the hash that is needed for the "Friendica" cookie
@@ -263,7 +264,7 @@ function permissions_sql($owner_id, $remote_verified = false, $groups = null)
 			);
 			if (DBM::is_result($r)) {
 				$remote_verified = true;
-				$groups = init_groups_visitor($remote_user);
+				$groups = Group::getIdsByContactId($remote_user);
 			}
 		}
 
@@ -325,7 +326,7 @@ function item_permissions_sql($owner_id, $remote_verified = false, $groups = nul
 			);
 			if (DBM::is_result($r)) {
 				$remote_verified = true;
-				$groups = init_groups_visitor($remote_user);
+				$groups = Group::getIdsByContactId($remote_user);
 			}
 		}
 		if ($remote_verified) {
@@ -424,22 +425,3 @@ function check_form_security_token_ForbiddenOnErr($typename = '', $formname = 'f
 		killme();
 	}
 }
-
-// Returns an array of group id's this contact is a member of.
-// This array will only contain group id's related to the uid of this
-// DFRN contact. They are *not* neccessarily unique across the entire site.
-
-
-if (! function_exists('init_groups_visitor')) {
-function init_groups_visitor($contact_id) {
-	$groups = array();
-	$r = q("SELECT `gid` FROM `group_member`
-		WHERE `contact-id` = %d ",
-		intval($contact_id)
-	);
-	if (DBM::is_result($r)) {
-		foreach ($r as $rr)
-			$groups[] = $rr['gid'];
-	}
-	return $groups;
-}}
diff --git a/mod/cal.php b/mod/cal.php
index cef9857ea..312489ef7 100644
--- a/mod/cal.php
+++ b/mod/cal.php
@@ -12,6 +12,7 @@ use Friendica\Core\PConfig;
 use Friendica\Core\System;
 use Friendica\Database\DBM;
 use Friendica\Model\Contact;
+use Friendica\Model\Group;
 
 require_once 'include/event.php';
 require_once 'include/redir.php';
@@ -127,7 +128,7 @@ function cal_content(App $a) {
 		}
 	}
 	if($contact_id) {
-		$groups = init_groups_visitor($contact_id);
+		$groups = Group::getIdsByContactId($contact_id);
 		$r = q("SELECT * FROM `contact` WHERE `id` = %d AND `uid` = %d LIMIT 1",
 			intval($contact_id),
 			intval($a->profile['profile_uid'])
diff --git a/mod/display.php b/mod/display.php
index 12b10f36f..67e6f435e 100644
--- a/mod/display.php
+++ b/mod/display.php
@@ -5,6 +5,7 @@ use Friendica\Core\Config;
 use Friendica\Core\System;
 use Friendica\Database\DBM;
 use Friendica\Model\Contact;
+use Friendica\Model\Group;
 use Friendica\Protocol\DFRN;
 
 function display_init(App $a) {
@@ -270,7 +271,7 @@ function display_content(App $a, $update = false, $update_uid = 0) {
 	}
 
 	if ($contact_id) {
-		$groups = init_groups_visitor($contact_id);
+		$groups = Group::getIdsByContactId($contact_id);
 		$r = dba::fetch_first("SELECT * FROM `contact` WHERE `id` = ? AND `uid` = ? LIMIT 1",
 			$contact_id,
 			$a->profile['uid']
diff --git a/mod/photos.php b/mod/photos.php
index 474181575..68b9752b5 100644
--- a/mod/photos.php
+++ b/mod/photos.php
@@ -9,6 +9,7 @@ use Friendica\Core\Config;
 use Friendica\Core\Worker;
 use Friendica\Database\DBM;
 use Friendica\Model\Contact;
+use Friendica\Model\Group;
 use Friendica\Model\Photo;
 use Friendica\Network\Probe;
 use Friendica\Object\Image;
@@ -1059,7 +1060,7 @@ function photos_content(App $a) {
 			}
 		}
 		if ($contact_id) {
-			$groups = init_groups_visitor($contact_id);
+			$groups = Group::getIdsByContactId($contact_id);
 			$r = q("SELECT * FROM `contact` WHERE `blocked` = 0 AND `pending` = 0 AND `id` = %d AND `uid` = %d LIMIT 1",
 				intval($contact_id),
 				intval($owner_uid)
diff --git a/mod/profile.php b/mod/profile.php
index 59835bd4c..fe2475c7a 100644
--- a/mod/profile.php
+++ b/mod/profile.php
@@ -5,6 +5,7 @@ use Friendica\Core\Config;
 use Friendica\Core\PConfig;
 use Friendica\Core\System;
 use Friendica\Database\DBM;
+use Friendica\Model\Group;
 
 require_once('include/contact_widgets.php');
 require_once('include/redir.php');
@@ -137,7 +138,7 @@ function profile_content(App $a, $update = 0) {
 	}
 
 	if ($contact_id) {
-		$groups = init_groups_visitor($contact_id);
+		$groups = Group::getIdsByContactId($contact_id);
 		$r = q("SELECT * FROM `contact` WHERE `id` = %d AND `uid` = %d LIMIT 1",
 			intval($contact_id),
 			intval($a->profile['profile_uid'])
diff --git a/mod/videos.php b/mod/videos.php
index bb0e0c237..11b7e21be 100644
--- a/mod/videos.php
+++ b/mod/videos.php
@@ -6,6 +6,7 @@ use Friendica\Core\System;
 use Friendica\Core\Worker;
 use Friendica\Database\DBM;
 use Friendica\Model\Contact;
+use Friendica\Model\Group;
 
 require_once('include/items.php');
 require_once('include/acl_selectors.php');
@@ -293,7 +294,7 @@ function videos_content(App $a) {
 			}
 		}
 		if($contact_id) {
-			$groups = init_groups_visitor($contact_id);
+			$groups = Group::getIdsByContactId($contact_id);
 			$r = q("SELECT * FROM `contact` WHERE `blocked` = 0 AND `pending` = 0 AND `id` = %d AND `uid` = %d LIMIT 1",
 				intval($contact_id),
 				intval($owner_uid)
diff --git a/src/Model/Group.php b/src/Model/Group.php
index a23b417cc..db9ec331e 100644
--- a/src/Model/Group.php
+++ b/src/Model/Group.php
@@ -61,7 +61,7 @@ class Group extends BaseObject
 	 * @param int $cid
 	 * @return array
 	 */
-	private static function getIdsByContactId($cid)
+	public static function getIdsByContactId($cid)
 	{
 		$condition = ['contact-id' => $cid];
 		$stmt = dba::select('group_member', ['gid'], $condition);
diff --git a/src/Protocol/DFRN.php b/src/Protocol/DFRN.php
index eeedd6324..070cf598a 100644
--- a/src/Protocol/DFRN.php
+++ b/src/Protocol/DFRN.php
@@ -14,6 +14,7 @@ use Friendica\Core\Worker;
 use Friendica\Database\DBM;
 use Friendica\Model\Contact;
 use Friendica\Model\GContact;
+use Friendica\Model\Group;
 use Friendica\Model\Profile;
 use Friendica\Model\User;
 use Friendica\Object\Image;
@@ -167,7 +168,7 @@ class DFRN
 
 			$contact = $r[0];
 			include_once 'include/security.php';
-			$groups = init_groups_visitor($contact['id']);
+			$groups = Group::getIdsByContactId($contact['id']);
 
 			if (count($groups)) {
 				for ($x = 0; $x < count($groups); $x ++)