diff --git a/booking.info b/booking.info
index 377d237..fa96a7f 100644
--- a/booking.info
+++ b/booking.info
@@ -4,6 +4,7 @@ package = Booking System
 dependencies[] = date
 dependencies[] = token
 dependencies[] = libraries
+dependencies[] = mailsystem
 version = 0.2
 configure = admin/config/booking/general
 core = 7.x
\ No newline at end of file