diff --git a/pandora_console/include/functions_modules.php b/pandora_console/include/functions_modules.php
index a729a043c7..71c277350c 100755
--- a/pandora_console/include/functions_modules.php
+++ b/pandora_console/include/functions_modules.php
@@ -2240,4 +2240,82 @@ function modules_get_first_contact_date($id_agent_module) {
 	
 	return $first_date;
 }
+
+/**
+ * Get the unknown time status of a module in a period.
+ * If there is more than 1 days between data, there is some unknown time modules
+ *
+ * @param int id_agent_module.
+ * @param int ending interval timestamp
+ * @param int interval duration
+ *
+ * @return int unknown seconds.
+ */
+function modules_get_unknown_time ($id_agent_module, $date, $period){
+	
+	// TODO REMOVE THE TIME IN PLANNED DOWNTIME
+	
+	if (empty($id_agent_module) || empty($date))
+		return false;
+	
+	// Set initial conditions
+	$unknown_seconds = 0; 
+	$datelimit = $date - $period;	
+	$search_in_history_db = db_search_in_history_db($datelimit);
+	
+	// Get interval data
+	$sql = sprintf ('SELECT utimestamp
+		FROM tagente_datos
+		WHERE id_agente_modulo = %d
+			AND utimestamp > %d AND utimestamp <= %d',
+		$id_agent_module, $datelimit, $date);
+	$sql .= ' ORDER BY utimestamp ASC';
+	$interval_data = db_get_all_rows_sql ($sql, $search_in_history_db);
+	
+	$previous_data = modules_get_previous_data ($id_agent_module, $datelimit);
+	
+	// All alternatives on first data
+	if ($previous_data === false && $interval_data === false) {
+		return false;
+	} else if($previous_data !== false && $interval_data === false) {
+		if (($date - $previous_data['utimestamp']) <= SECONDS_1DAY) {
+			return 0;
+		}
+		if (($previous_data['utimestamp'] + SECONDS_1DAY) >= $datelimit) {
+			return $date - ($previous_data['utimestamp'] + SECONDS_1DAY);
+		} else {
+			return $period;
+		}
+	} else if ($previous_data === false && $interval_data !== false) {
+		$first_data = array_shift ($interval_data);
+		$unknown_seconds += $first_data['utimestamp'] - $datelimit;
+		array_unshift ($interval_data, $first_data);
+	} else {
+		$first_data = array_shift ($interval_data);
+		if (($previous_data['utimestamp'] + SECONDS_1DAY) >= $first_data['utimestamp']) {
+			if (($previous_data['utimestamp'] + SECONDS_1DAY) >= $datelimit) {
+				$unknown_seconds += $previous_data['utimestamp'] + SECONDS_1DAY - $first_data['utimestamp'];
+			} else {
+				$unknown_seconds += $first_data['utimestamp'] - $datetime;
+			}
+		}
+		array_unshift ($interval_data, $first_data);
+	}
+	
+	// Put utimestamp like last data
+	$last_data['utimestamp'] = $date; 
+	array_push ($interval_data, $last_data);
+	$previous_data = array_shift ($previous_data);
+	
+	// Check if all datas have data maximum one day before
+	foreach ($interval_data as $data) {
+		$previous_1day = $previous_data['utimestamp'] + SECONDS_1DAY;
+		if ($previous_1day >= $data['utimestamp']) {
+			$unknown_period += $previous_1day - $data['utimestamp'];
+		}
+		$previous_data = $data;
+	}
+	
+	return $unknown_seconds;
+}
 ?>
diff --git a/pandora_console/include/functions_reporting.php b/pandora_console/include/functions_reporting.php
index b7115f0c38..2177b6d6af 100644
--- a/pandora_console/include/functions_reporting.php
+++ b/pandora_console/include/functions_reporting.php
@@ -3844,11 +3844,11 @@ function reporting_availability($report, $content) {
 				$content['time_from'],
 				$content['time_to']);
 			
-			$count_checks = modules_get_count_datas(
-				$item['id_agent_module'],
-				$report["datetime"] - $content['period'],
-				$report["datetime"]);
-			
+			$item['interval_agent_module'] = modules_get_interval ($item['id_agent_module']);
+			$unknown_seconds = modules_get_unknown_time ($item['id_agent_module'], $report["datetime"], $content['period']);
+			if ($unknown_seconds !== false) {
+				$count_checks = (int)(($content['period'] - $unknown_seconds)/$item['interval_agent_module']);
+			}
 			
 			if ($sla_value === false) {
 				$row['checks'] = __('Unknown');
@@ -3872,11 +3872,13 @@ function reporting_availability($report, $content) {
 				$row['failed'] =
 					format_numeric($percent_fail * $count_checks / 100, 0);
 				
-				
+				$row['poling_time'] = "-";
+				if ($percent_ok > 0) {
 				$row['poling_time'] =
 					human_time_description_raw(
 						($percent_ok * $count_checks / 100) * modules_get_interval($item['id_agent_module']),
 					true);
+				}
 				
 				$row['time_unavaliable'] = "-";
 				if ($percent_fail > 0) {