diff --git a/addressbook/inc/class.addressbook_hooks.inc.php b/addressbook/inc/class.addressbook_hooks.inc.php
index 3e59d85b65..ff4d1134f2 100644
--- a/addressbook/inc/class.addressbook_hooks.inc.php
+++ b/addressbook/inc/class.addressbook_hooks.inc.php
@@ -421,7 +421,7 @@ class addressbook_hooks
 	{
 		// Add users / groups this contact is shared with
 		$entry['shared_with'] = [];
-		foreach($entry['shared'] as $id => $share)
+		foreach((array)$entry['shared'] as $id => $share)
 		{
 			$entry['shared_with'][] = $share['shared_with'];
 		}
diff --git a/addressbook/inc/class.addressbook_ui.inc.php b/addressbook/inc/class.addressbook_ui.inc.php
index c354f3faf2..3270dece49 100644
--- a/addressbook/inc/class.addressbook_ui.inc.php
+++ b/addressbook/inc/class.addressbook_ui.inc.php
@@ -2229,7 +2229,7 @@ class addressbook_ui extends addressbook_bo
 		if (is_array($content))
 		{
 			// sync $content['shared'] with $content['shared_values']
-			foreach($content['shared'] as $key => $shared)
+			foreach((array)$content['shared'] as $key => $shared)
 			{
 				$shared_value = $shared['shared_id'].':'.$shared['shared_with'].':'.$shared['shared_by'].':'.$shared['shared_writable'];
 				if (($k = array_search($shared_value, (array)$content['shared_values'])) === false)