diff --git a/booking.module b/booking.module
index 71dbcad..479e748 100644
--- a/booking.module
+++ b/booking.module
@@ -74,7 +74,7 @@ module_load_include('inc', 'booking', 'booking.stripe');
 // Load the include for miscellaneous functions
 module_load_include('inc', 'booking', 'booking.misc');
 // Load the include for the extended mail system
-module_load_include('inc', 'booking', 'booking.MailSystemInferface');
+module_load_include('inc', 'booking', 'booking.MailSystemInterface');
 
 function booking_init() {
 	date_default_timezone_set(date_default_timezone(FALSE));