diff --git a/waterbox/make-all-cores.sh b/waterbox/make-all-cores.sh
index f441a5eb4b..81f1593e74 100755
--- a/waterbox/make-all-cores.sh
+++ b/waterbox/make-all-cores.sh
@@ -6,7 +6,7 @@ make -C emulibc $1 -j
 make -C libco $1 -j
 ./ares64/make-both.sh $1
 make -C bsnescore $1 -j
-make -C dosbox $1 -j
+make -C dosbox $1 -j8
 make -C dsda $1 -j
 make -C gpgx $1 -j
 make -C libsnes $1 -j