diff --git a/SOPE/NGCards/iCalRecurrenceRule.m b/SOPE/NGCards/iCalRecurrenceRule.m
index 4292d37bb..9842dd455 100644
--- a/SOPE/NGCards/iCalRecurrenceRule.m
+++ b/SOPE/NGCards/iCalRecurrenceRule.m
@@ -19,6 +19,8 @@
   02111-1307, USA.
 */
 
+#import <Foundation/NSArray.h>
+#import <Foundation/NSEnumerator.h>
 #import <Foundation/NSException.h>
 #import <NGExtensions/NSString+Ext.h>
 #import <NGExtensions/NSObject+Logs.h>
diff --git a/SOPE/NGCards/iCalTimeZone.m b/SOPE/NGCards/iCalTimeZone.m
index 51bd37298..1de139fb6 100644
--- a/SOPE/NGCards/iCalTimeZone.m
+++ b/SOPE/NGCards/iCalTimeZone.m
@@ -21,8 +21,9 @@
  */
 
 #import <Foundation/NSArray.h>
-#import <Foundation/NSString.h>
 #import <Foundation/NSCalendarDate.h>
+#import <Foundation/NSString.h>
+#import <Foundation/NSTimeZone.h>
 
 #import "NSCalendarDate+NGCards.h"
 #import "NSString+NGCards.h"