X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambda%2Fpreamble.ma;h=f3884b229489f7bbe58cd0bde50e28c7086b6833;hb=72ced8ef1347b660fa45437443553ceeea8af57a;hp=3d5efb8f2acf300c1107057d1e5b50d7a5ca0073;hpb=9def1b8a298aac85a7abdc75c4a33657fe7e6df7;p=helm.git

diff --git a/matita/matita/contribs/lambda/preamble.ma b/matita/matita/contribs/lambda/preamble.ma
index 3d5efb8f2..f3884b229 100644
--- a/matita/matita/contribs/lambda/preamble.ma
+++ b/matita/matita/contribs/lambda/preamble.ma
@@ -14,7 +14,7 @@
 
 include "basics/star.ma".
 include "basics/lists/list.ma".
-include "arithmetics/nat.ma".
+include "arithmetics/exp.ma".
 
 include "xoa_notation.ma".
 include "xoa.ma".