X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Fsoftware%2Fcomponents%2Ftactics%2Funiverse.ml;h=8fb71075589ce85b73efe175942f6f3b3c31c3f7;hb=6033870314160f36fa814914550682b304beaba0;hp=f7c3932dc688abf1e5ca3c4acb0308d59b1d4a66;hpb=2e2648a9ed26d9b813de8e6a10e2776162565f09;p=helm.git

diff --git a/helm/software/components/tactics/universe.ml b/helm/software/components/tactics/universe.ml
index f7c3932dc..8fb710755 100644
--- a/helm/software/components/tactics/universe.ml
+++ b/helm/software/components/tactics/universe.ml
@@ -73,7 +73,7 @@ let rec collapse_head_metas t =
 
 let rec dummies_of_coercions = 
   function
-    | Cic.Appl (c::l) when CoercDb.is_a_coercion' c ->
+    | Cic.Appl (c::l) when CoercDb.is_a_coercion c <> None ->
         Cic.Meta (-1,[])
     | Cic.Appl l -> 
         let l' = List.map dummies_of_coercions l in Cic.Appl l'