diff --git a/pandora_console/godmode/reporting/reporting_builder.item_editor.php b/pandora_console/godmode/reporting/reporting_builder.item_editor.php
index 74d9f07527..b30f1d6c43 100755
--- a/pandora_console/godmode/reporting/reporting_builder.item_editor.php
+++ b/pandora_console/godmode/reporting/reporting_builder.item_editor.php
@@ -5941,6 +5941,7 @@ ui_require_javascript_file('pandora');
 ?>
 
 <script type="text/javascript">
+const ACTION = '<?php echo $actionParameter; ?>';
 $(document).ready (function () {
     chooseType();
     chooseSQLquery();
@@ -7601,6 +7602,12 @@ function chooseType() {
     $("#row_ncm_group").hide();
     $("#row_ncm_agent").hide();
 
+    if (ACTION !== 'update') {
+        // Set default period value, this value will be change for each report.
+        period_set_value($("#hidden-period").attr('class'), 300);
+        $("#row_period").find('select').val('300').trigger('change');
+    }
+
     switch (type) {
         case 'event_report_group':
             $("#row_description").show();
@@ -7763,8 +7770,10 @@ function chooseType() {
             $("#row_agent").show();
             $("#row_module").show();
             $("#row_historical_db_check").hide();
-            period_set_value($("#hidden-period").attr('class'), 3600);
-            $("#row_period").find('select').val('3600').trigger('change');
+            if (ACTION !== 'update') {
+                period_set_value($("#hidden-period").attr('class'), 3600);
+                $("#row_period").find('select').val('3600').trigger('change');
+            }
             break;
 
         case 'SLA_monthly':
diff --git a/pandora_console/include/functions_reporting.php b/pandora_console/include/functions_reporting.php
index 7534cb5e23..33037b7045 100755
--- a/pandora_console/include/functions_reporting.php
+++ b/pandora_console/include/functions_reporting.php
@@ -16206,7 +16206,8 @@ function reporting_module_histogram_graph($report, $content, $pdf=0)
         // Si viene de no iniciado busco el primer dato del modulo y si es de histórico.
         $first_utimestamp = false;
         $search_historydb = false;
-        $extract_first_data = modules_get_first_date($content['id_agent_module'], 0);
+        // Limitamos el primer dato al rango de tiempo seleccionado por el usuario.
+        $extract_first_data = modules_get_first_date($content['id_agent_module'], $date_start);
         if (empty($extract_first_data) === false) {
             $first_utimestamp = $extract_first_data['first_utimestamp'];
             $search_historydb = (isset($extract_first_data['search_historydb']) === true) ? $extract_first_data['search_historydb'] : false;
@@ -16311,7 +16312,8 @@ function reporting_module_histogram_graph($report, $content, $pdf=0)
     $return['data_ok'] = $check_ok;
     $return['data_total'] = $check_total;
     if ($check_total > 0) {
-        $return['percent_ok'] = (($time_ok * 100) / $content['period']);
+        $percent_ok = (($time_ok * 100) / $content['period']);
+        $return['percent_ok'] = ($percent_ok > 100) ? 100 : $percent_ok;
     } else {
         $return['percent_ok'] = 0;
     }