X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;ds=sidebyside;f=matita%2Fcontribs%2FRELATIONAL%2Fpreamble.ma;h=d52da97017d54775de591a7d91acb3ecebac11c4;hb=77405663b295e36da4e322c6f8184a1d256f8b78;hp=050d9deced0d08130996f06eb30c2ef133b0e56a;hpb=4d945e028b3787f5aa26bdb0ef1639cde3ac30fe;p=helm.git

diff --git a/matita/contribs/RELATIONAL/preamble.ma b/matita/contribs/RELATIONAL/preamble.ma
index 050d9dece..d52da9701 100644
--- a/matita/contribs/RELATIONAL/preamble.ma
+++ b/matita/contribs/RELATIONAL/preamble.ma
@@ -16,3 +16,4 @@ set "baseuri" "cic:/matita/RELATIONAL/preamble".
 
 include "logic/equality.ma".
 include "logic/connectives.ma".
+include "datatypes/constructors.ma".