diff --git a/lib/src/catalan/DiffCat.gf b/lib/src/catalan/DiffCat.gf
index b2febbd59..4eae5f6b6 100644
--- a/lib/src/catalan/DiffCat.gf
+++ b/lib/src/catalan/DiffCat.gf
@@ -36,9 +36,9 @@ oper
 
     artIndef = \g,n,c -> case <n,c> of {
       <Sg,CPrep P_de>   => genForms ["d' un"] ["d' una"] ! g ;
-      <Pl,CPrep P_de> => genForms ["d' uns"] ["d' unes"] ! g ;
       <Sg,_> => prepCase c ++ genForms "un" "una" ! g ;
-      <Pl,_> => prepCase c ++ genForms "uns" "unes" ! g
+                           ---      <Pl,CPrep P_de> => genForms ["d' uns"] ["d' unes"] ! g ;
+      <Pl,_> => prepCase c --- ++ genForms "uns" "unes" ! g --- take this as a determiner
       } ;
 
       
diff --git a/lib/src/spanish/DiffSpa.gf b/lib/src/spanish/DiffSpa.gf
index 55c720c49..dc0a2f352 100644
--- a/lib/src/spanish/DiffSpa.gf
+++ b/lib/src/spanish/DiffSpa.gf
@@ -33,7 +33,7 @@ instance DiffSpa of DiffRomance = open CommonRomance, PhonoSpa, BeschSpa, Prelud
 
     artIndef = \g,n,c -> case n of {
       Sg  => prepCase c ++ genForms "un"   "una" ! g ;
-      _   => prepCase c ++ genForms "unos" "unas" ! g
+      _   => prepCase c -- ++ genForms "unos" "unas" ! g   --- take this as a determiner
       } ;
 
     possCase = \_,_,c -> prepCase c ;