1 files changed, 3 insertions, 0 deletions
diff --git a/Makefile.in b/Makefile.in
index fa810784..a5026a7e 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -589,6 +589,7 @@ OTHERDIRS=\
   src/roff/nroff \
   doc \
   contrib/mm \
+  contrib/chem \
   contrib/pic2graph \
   contrib/eqn2graph \
   contrib/grap2graph \
@@ -606,6 +607,8 @@ EXTRADIRS=\
   doc
 NOMAKEDIRS=\
   arch/djgpp \
+  contrib/chem/examples \
+  contrib/chem/examples/122 \
   contrib/groffer/perl \
   contrib/groffer/shell \
   contrib/hdtbl/examples \