diff --git a/Makefile b/Makefile
index 50e8a1da..d44c3c75 100644
--- a/Makefile
+++ b/Makefile
@@ -19,6 +19,7 @@ SUBDIRS = inst/pre \
 		YMem YOptString \
 		gtopts \
 		lock sigsync shmem \
+		contr/YMtBuf \
 		contr/YRrBuf \
 		contr/YRrLogBuf \
 		contr/YStringTree \
@@ -26,8 +27,9 @@ SUBDIRS = inst/pre \
 		contr \
 		YLoadableObject \
 		msgfmt eloop statecheck \
-		YThread YEvent YCbContr \
-		YStopWatch YStopWatchList YStopWatchQueue YStopWatchThreadList \
+		YStopWatch \
+		YCbContr YEvent YThread \
+		YStopWatchList YStopWatchQueue YStopWatchThreadList \
 		YLogger \
 		YApplication \
 		YOsc \