diff --git a/scripts/ubuntu-req.sh b/scripts/ubuntu-req.sh
index f72c48f4..a4697174 100755
--- a/scripts/ubuntu-req.sh
+++ b/scripts/ubuntu-req.sh
@@ -24,4 +24,4 @@ sudo apt-get install -y device-tree-compiler
 git clone http://git.veripool.org/git/verilator
 cd verilator
 git checkout v4.034
-autoconf && ./configure && make -j16 && sudo make install
+autoconf && ./configure && make -j$(nproc) && sudo make install