diff --git a/SOPE/NGCards/NSCalendarDate+ICal.m b/SOPE/NGCards/NSCalendarDate+ICal.m
index c2c89cce2..3363d2f3b 100644
--- a/SOPE/NGCards/NSCalendarDate+ICal.m
+++ b/SOPE/NGCards/NSCalendarDate+ICal.m
@@ -19,6 +19,9 @@
   02111-1307, USA.
 */
 
+#warning this module should be cleaned up and \
+  merged with NSCalendarDate+NGCards
+
 #import <Foundation/NSString.h>
 #import <Foundation/NSTimeZone.h>
 
diff --git a/SOPE/NGCards/iCalRecurrenceRule.m b/SOPE/NGCards/iCalRecurrenceRule.m
index 622506d5c..a997849ad 100644
--- a/SOPE/NGCards/iCalRecurrenceRule.m
+++ b/SOPE/NGCards/iCalRecurrenceRule.m
@@ -205,7 +205,7 @@
 - (void) setUntilDate: (NSCalendarDate *) _untilDate
 {
   [self setNamedValue: @"until"
-        to: [_untilDate iCalFormattedDateTimeString]];
+        to: [_untilDate icalString]];
 }
 
 - (NSCalendarDate *) untilDate