..

diff --git a/Makefile b/Makefile
index 44b87c579a6b3216bbd663d1436cd4cd465bd15d..035ab0a47ddb104d3434d297293b969ab4081b08 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -58,6 +58,7 @@ CLEAN_ON_DIST =               \
        matita/dama/    \
        matita/dama_didactic/   \
        matita/contribs/        \
+       matita/library/assembly/        \
        matita/library_auto/    \
        $(NULL)
 EXTRA_DIST =                   \