diff --git a/build/service/CalendarExtractor.php b/build/service/CalendarExtractor.php
index cb075f9..64ba136 100644
--- a/build/service/CalendarExtractor.php
+++ b/build/service/CalendarExtractor.php
@@ -276,8 +276,8 @@
 				---------------------------------------------------------*/
 				foreach($events as $start_t=>$stop_t){
 					$RAW .= "BEGIN:VEVENT\n";
-					$RAW .= "DTSTART:$start_t\n";
-					$RAW .= "DTSTOP:$stop_t\n";
+					$RAW .= "DTSTART;TZID=Europe/Paris:$start_t\n";
+					$RAW .= "DTSTOP;TZID=Europe/Paris:$stop_t\n";
 					$RAW .= "SUMMARY:$type\n";
 					$RAW .= "END:VEVENT\n\n";
 				}