diff --git a/resource/bulgarian/PhraseBul.gf b/resource/bulgarian/PhraseBul.gf
index 96beab49..6e29ddf3 100644
--- a/resource/bulgarian/PhraseBul.gf
+++ b/resource/bulgarian/PhraseBul.gf
@@ -7,4 +7,5 @@ concrete PhraseBul of Phrase = CatBul ** open Prelude, ResBul in {
     UttImpPl  pol imp = {s = pol.s ++ imp.s ! pol.p ! GPl} ;
     UttImpPol pol imp = {s = pol.s ++ imp.s ! pol.p ! GPl} ;
 
+    UttIAdv iadv = iadv ;
 }