diff --git a/next-lib/src/scandinavian/CommonScand.gf b/next-lib/src/scandinavian/CommonScand.gf
index 487082305..9aa52f74c 100644
--- a/next-lib/src/scandinavian/CommonScand.gf
+++ b/next-lib/src/scandinavian/CommonScand.gf
@@ -168,7 +168,7 @@ oper
   mkCase : Case -> Str -> Str = \c,f -> case c of {
       Nom => f ;
       Gen => f + case last f of {
-        "s" | "x" => [] ;
+        "s" | "z" | "x" => [] ;
         _ => "s"
         }
       } ;