diff --git a/src/Contacts/OWSDisappearingMessagesConfiguration.m b/src/Contacts/OWSDisappearingMessagesConfiguration.m
index 899b09e9..22883ed6 100644
--- a/src/Contacts/OWSDisappearingMessagesConfiguration.m
+++ b/src/Contacts/OWSDisappearingMessagesConfiguration.m
@@ -138,7 +138,8 @@ + (NSString *)stringForDurationSeconds:(uint32_t)durationSeconds
               @(21600),
               @(43200),
               @(86400),
-              @(604800) ];
+              @(604800),
+              @(1814400) ];
 }
 
 - (NSUInteger)durationIndex