diff --git a/src/somali/CatSom.gf b/src/somali/CatSom.gf
index f0da1e00..2c6a090f 100644
--- a/src/somali/CatSom.gf
+++ b/src/somali/CatSom.gf
@@ -122,4 +122,5 @@ linref
     VP = linVP VInf ;
     CN = linCN ;
     Prep = \prep -> prep.s ! P3_Prep ++ prep.sii ++ prep.dhex ;
+    S = \s -> linBaseCl (s.s ! False) ;
 }