diff --git a/classes/GoogleCalendarService.php b/classes/GoogleCalendarService.php
index 984d677..0b0f3a0 100755
--- a/classes/GoogleCalendarService.php
+++ b/classes/GoogleCalendarService.php
@@ -2,11 +2,12 @@
 
 use Log;
 use Cache;
+use Carbon\Carbon;
 
 use NicoSt\GCalendar\Models\Settings;
 
 class GoogleCalendarService {
-    private $cacheTimeDefault = 15;
+    private $cacheTimeMinutesDefault = 15;
 
     private $cacheKeyCalendarList = 'GCalendar-CalendarList';
     private $cacheKeyCalendarGet = 'GCalendar-CalendarGet#';
@@ -20,9 +21,9 @@ class GoogleCalendarService {
 
     public function getCalendar($calendarId, $maxEvents = '10') {
         $cachedCalendarGet = Cache::get($this->cacheKeyCalendarGet.$calendarId);
-        $cacheTime = Settings::get('cache_time', $this->cacheTimeDefault);
+        $cacheTimeMinutes = Settings::get('cache_time', $this->cacheTimeMinutesDefault);
 
-        if(!isset($cachedCalendarGet) || $cacheTime == 0) {
+        if(!isset($cachedCalendarGet) || $cacheTimeMinutes == 0) {
             // "timeMin"        -> Set param to only get upcoming events
             // "singleEvents"   -> Split recurring events into single events
             // "orderBy"        -> Order events by startTime
@@ -35,10 +36,11 @@ class GoogleCalendarService {
             );
 
             try {
-                //Log::debug('G-Calendar: Call google with #getCalendar for calendar with id: ' . $calendarId);
+                Log::debug('G-Calendar: Call google with #getCalendar for calendar with id: ' . $calendarId);
                 $response = $this->service->events->listEvents($calendarId, $params);
 
-                Cache::put($this->cacheKeyCalendarGet.$calendarId, $response, $cacheTime);
+                $expiresAt = Carbon::now()->addMinutes($cacheTimeMinutes);
+                Cache::put($this->cacheKeyCalendarGet.$calendarId, $response, $expiresAt);
                 return $response;
             } catch (\Exception $e) {
                 $json = json_decode($e->getMessage(), true);
@@ -52,14 +54,15 @@ class GoogleCalendarService {
 
     public function calendarList() {
         $cachedCalendarList = Cache::get($this->cacheKeyCalendarList);
-        $cacheTime = Settings::get('cache_time', $this->cacheTimeDefault);
+        $cacheTimeMinutes = Settings::get('cache_time', $this->cacheTimeMinutesDefault);
 
-        if(!isset($cachedCalendarList) || $cacheTime == 0) {
+        if(!isset($cachedCalendarList) || $cacheTimeMinutes == 0) {
             try {
-                //Log::debug('G-Calendar: Call google with #calendarList.');
+                Log::debug('G-Calendar: Call google with #calendarList.');
                 $response = $this->service->calendarList->listCalendarList()->getItems();
 
-                Cache::put($this->cacheKeyCalendarList, $response, $cacheTime);
+                $expiresAt = Carbon::now()->addMinutes($cacheTimeMinutes);
+                Cache::put($this->cacheKeyCalendarList, $response, $expiresAt);
                 return $response;
             } catch (\Exception $e) {
                 $json = json_decode($e->getMessage(), true);