diff --git a/pandora_console/godmode/reporting/reporting_builder.item_editor.php b/pandora_console/godmode/reporting/reporting_builder.item_editor.php
index 4bb76a00fa..7762f7b752 100755
--- a/pandora_console/godmode/reporting/reporting_builder.item_editor.php
+++ b/pandora_console/godmode/reporting/reporting_builder.item_editor.php
@@ -3744,6 +3744,16 @@ $(document).ready (function () {
 
     $("#combo_group").change (
         function () {
+
+            // Alert report group must show all matches when selecting All group
+            // ignoring 'recursion' option. #6497.
+            if ($("#combo_group").val() == 0) {
+                $('#checkbox-recursion').attr('disabled',true)
+                $('#checkbox-recursion').attr('checked','checked')
+            } else {
+                $('#checkbox-recursion').removeAttr('disabled')
+            }
+
             $("#id_agents").html('');
             $("#id_agents2").html('');
             $("#module").html('');
@@ -3772,6 +3782,7 @@ $(document).ready (function () {
             );
         }
     );
+    $("#combo_group").change();
 
     $("#checkbox-recursion").change (
         function () {
diff --git a/pandora_console/include/functions_reporting.php b/pandora_console/include/functions_reporting.php
index 575abb43a6..96099e6f9c 100755
--- a/pandora_console/include/functions_reporting.php
+++ b/pandora_console/include/functions_reporting.php
@@ -3912,7 +3912,7 @@ function reporting_alert_report_group($report, $content)
 
     $agent_modules = alerts_get_agent_modules(
         $content['id_group'],
-        $content['recursion']
+        (((string) $content['id_group'] === '0') ? true : $content['recursion'])
     );
 
     if (empty($alerts)) {