diff --git a/ActiveSync/iCalToDo+ActiveSync.m b/ActiveSync/iCalToDo+ActiveSync.m
index 3512a09b6..cf9a535c8 100644
--- a/ActiveSync/iCalToDo+ActiveSync.m
+++ b/ActiveSync/iCalToDo+ActiveSync.m
@@ -42,6 +42,7 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #import <NGCards/iCalCalendar.h>
 #import <NGCards/iCalDateTime.h>
 #import <NGCards/iCalTimeZone.h>
+#import <NGCards/iCalTrigger.h>
 
 #import <Appointments/iCalEntityObject+SOGo.h>