X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Fsoftware%2Fmatita%2Fcontribs%2Fprocedural%2FCoq%2FSets%2FEnsembles.mma;h=4de4dc1b9c91f05f1920b0d85b7f183160606370;hb=0639dda9142d1cf047b07e61fb557e8877aba4d8;hp=501b6c297c2b015230f4df1cc691ddd001c3b5ae;hpb=f620bf94af6c347926ed1c2328462efab7018b21;p=helm.git

diff --git a/helm/software/matita/contribs/procedural/Coq/Sets/Ensembles.mma b/helm/software/matita/contribs/procedural/Coq/Sets/Ensembles.mma
index 501b6c297..4de4dc1b9 100644
--- a/helm/software/matita/contribs/procedural/Coq/Sets/Ensembles.mma
+++ b/helm/software/matita/contribs/procedural/Coq/Sets/Ensembles.mma
@@ -16,6 +16,8 @@
 
 include "Coq.ma".
 
+include "Init/Prelude.ma".
+
 (*#***********************************************************************)
 
 (*  v      *   The Coq Proof Assistant  /  The Coq Development Team     *)