diff --git a/sys/unix/hints/linux.2020 b/sys/unix/hints/linux.2020
index dc7f23df8..76701643c 100755
--- a/sys/unix/hints/linux.2020
+++ b/sys/unix/hints/linux.2020
@@ -53,7 +53,7 @@ GAMEGRP  = games
 #-INCLUDE compiler.2020
 
 # NetHack sources control
-#NHCFLAGS+=-DDLB
+NHCFLAGS+=-DDLB
 NHCFLAGS+=-DHACKDIR=\"$(HACKDIR)\"
 NHCFLAGS+=-DDEFAULT_WINDOW_SYS=\"$(WANT_DEFAULT)\"
 NHCFLAGS+=-DSYSCF -DSYSCF_FILE=\"$(HACKDIR)/sysconf\" -DSECURE