diff --git a/src/RuleCollection.php b/src/RuleCollection.php
index 38a4fa5db31..d2fe47cd452 100644
--- a/src/RuleCollection.php
+++ b/src/RuleCollection.php
@@ -50,7 +50,7 @@ class RuleCollection extends CommonDBTM
     public $use_output_rule_process_as_next_input = false;
    /// Rule collection can be replay (for dictionary)
     public $can_replay_rules                      = false;
-   /// List of rules of the rule collection
+    /** @var SingletonRuleList $RuleList List of rules of the rule collection */
     public $RuleList                              = null;
    /// Menu type
     public $menu_type                             = "rule";
@@ -1694,6 +1694,7 @@ public function showRulesEnginePreviewCriteriasForm($target, array $values, $con
         $input = $this->prepareInputDataForTestProcess($condition);
 
         if (count($input)) {
+            /** @var Rule $rule */
             $rule      = $this->getRuleClass();
             $criterias = $rule->getAllCriteria();
             echo "<form name='testrule_form' id='testrulesengine_form' method='post' action='$target'>";
@@ -1701,7 +1702,7 @@ public function showRulesEnginePreviewCriteriasForm($target, array $values, $con
             echo "<table class='tab_cadre_fixe'>";
             echo "<tr><th colspan='2'>" . _n('Criterion', 'Criteria', Session::getPluralNumber()) . "</th></tr>\n";
 
-           //Brower all criterias
+            //Brower all criterias
             foreach ($input as $criteria) {
                 echo "<tr class='tab_bg_1'>";
 
@@ -1953,7 +1954,11 @@ public function showRulesEnginePreviewResultsForm($target, array $input, $condit
 
         $output        = $this->cleanTestOutputCriterias($output);
         unset($output["result"]);
-        $global_result = (count($output) ? 1 : 0);
+        if (count($output) === 1 && ($output['_no_rule_matches'] ?? false)) {
+            $global_result = 0;
+        } else {
+            $global_result = (count($output) ? 1 : 0);
+        }
 
         echo "<br><table class='tab_cadrehov'>";
         $this->showTestResults($rule, $output, $global_result);
diff --git a/src/RuleRightCollection.php b/src/RuleRightCollection.php
index 8eb7d8e1efc..283b25d850b 100644
--- a/src/RuleRightCollection.php
+++ b/src/RuleRightCollection.php
@@ -81,12 +81,10 @@ public function showTestResults($rule, array $output, $global_result)
         if (isset($output["_ldap_rules"]["rules_entities"])) {
             echo "<tr class='tab_bg_2'>";
             echo "<td class='center' colspan='4'>" . __('Entities assignment') . "</td>";
-            foreach ($output["_ldap_rules"]["rules_entities"] as $entities) {
-                foreach ($entities as $entity) {
-                    $this->displayActionByName("entity", $entity[0]);
-                    if (isset($entity[1])) {
-                        $this->displayActionByName("recursive", $entity[1]);
-                    }
+            foreach ($output["_ldap_rules"]["rules_entities"] as $entity) {
+                $this->displayActionByName("entity", $entity[0]);
+                if (isset($entity[1])) {
+                    $this->displayActionByName("recursive", $entity[1]);
                 }
             }
         }
@@ -232,23 +230,21 @@ public function prepareInputDataForProcess($input, $params)
         $params_lower = array_change_key_case($params, CASE_LOWER);
 
        //common parameters
-        $rule_parameters = [
+        $rule_parameters = array_merge($params_lower, [
             'TYPE'       => $params_lower["type"] ?? "",
             'LOGIN'      => $params_lower["login"] ?? "",
             'MAIL_EMAIL' => $params_lower["email"] ?? $params_lower["mail_email"] ?? "",
-            '_groups_id' => $groups
-        ];
+        ]);
 
        //IMAP/POP login method
-        if ($params_lower["type"] == Auth::MAIL) {
+        if ($rule_parameters["TYPE"] == Auth::MAIL) {
             $rule_parameters["MAIL_SERVER"] = $params_lower["mail_server"] ?? "";
         }
 
-       //LDAP type method
-        if ($params_lower["type"] == Auth::LDAP) {
-           //Get all the field to retrieve to be able to process rule matching
-            $rule_fields = $this->getFieldsToLookFor();
-
+        //LDAP type method
+        //Get all the field to retrieve to be able to process rule matching
+        $rule_fields = $this->getFieldsToLookFor();
+        if ($rule_parameters["TYPE"] == Auth::LDAP && count($rule_fields)) {
            //Get all the data we need from ldap to process the rules
             $sz = @ldap_read(
                 $params_lower["connection"],
diff --git a/src/SingletonRuleList.php b/src/SingletonRuleList.php
index 89c3334c80c..1152354131f 100644
--- a/src/SingletonRuleList.php
+++ b/src/SingletonRuleList.php
@@ -35,7 +35,7 @@
 
 class SingletonRuleList
 {
-   /// Items list
+    /** @var Rule[] $list Rule list */
     public $list = [];
    /// Items loaded ?
     public $load = 0;