diff --git a/src/catalan/DiffCat.gf b/src/catalan/DiffCat.gf
index b157d3cd5..f4e7c1e87 100644
--- a/src/catalan/DiffCat.gf
+++ b/src/catalan/DiffCat.gf
@@ -225,4 +225,7 @@ oper
 
     polNegDirSubj = RPos ;
 
+param
+  HasArt = NoArt | UseArt ;
+
 }
diff --git a/src/italian/DiffIta.gf b/src/italian/DiffIta.gf
index 32988d718..215bd6c5e 100644
--- a/src/italian/DiffIta.gf
+++ b/src/italian/DiffIta.gf
@@ -251,4 +251,7 @@ instance DiffIta of DiffRomance - [contractInf] = open CommonRomance, PhonoIta,
 
   polNegDirSubj = RPos ;
 
+param
+  HasArt = NoArt | UseArt ;
+
 }
diff --git a/src/portuguese/DiffPor.gf b/src/portuguese/DiffPor.gf
index 04185d2d3..1a7085eb2 100644
--- a/src/portuguese/DiffPor.gf
+++ b/src/portuguese/DiffPor.gf
@@ -291,4 +291,7 @@ instance DiffPor of DiffRomance - [iAdvQuestionInv,chooseTA,otherInv,partAgr,sta
     -- make a verb of type haver
     verboV v = verbBesch v ** {vtyp = VTer ; p = [] } ;
 
+param
+  HasArt = NoArt | UseArt ;
+
 } ;