diff --git a/Makefile b/Makefile
index 47536cad..032e9826 100644
--- a/Makefile
+++ b/Makefile
@@ -13,7 +13,7 @@ SUBDIRS = inst/pre \
 		cfgfile gtopts \
 		lock sigsync shmem \
 		usrv uclnt statecheck msgfmt \
-		YMisc YError \
+		YMisc YError YMem \
 		YThread YMutex YEvent YCbContr contr/Y2WayMap \
 		YTimeB YStopWatch YStopWatchList YStopWatchQueue YStopWatchThreadList \
 		lib include bin \