diff --git a/src/uncategorized/BackwardsCompatibility.tw b/src/uncategorized/BackwardsCompatibility.tw
index f0bdc96ae635ea4bec5eb9a05e04bebaad807104..241682c070c6977b441ea488c6bc82fbe79e9fb6 100644
--- a/src/uncategorized/BackwardsCompatibility.tw
+++ b/src/uncategorized/BackwardsCompatibility.tw
@@ -3705,4 +3705,8 @@ Done!
 
 <<if ndef $DefaultBirthDestination>>
 	<<set $DefaultBirthDestination = "">>
+<</if>>
+
+<<if def $sissy>>
+	<<unset $sissy>>
 <</if>>
\ No newline at end of file