diff --git a/.github/workflows/bench.yaml b/.github/workflows/bench.yaml
index 19ab69e..8cb15d1 100644
--- a/.github/workflows/bench.yaml
+++ b/.github/workflows/bench.yaml
@@ -32,10 +32,10 @@ jobs:
         run: |
           sudo apt install -y build-essential libcairo2-dev libpango1.0-dev libjpeg-dev libgif-dev librsvg2-dev
           npm install
-          bash build.sh
+          ./build.sh
       - name: Run bench and graph results
         working-directory: ./bench
-        run: bash bench.sh
+        run: ./bench.sh
       - uses: chrislennon/action-aws-cli@v1.1
       - name: Upload to S3
         env:
diff --git a/bench/bench.sh b/bench/bench.sh
old mode 100644
new mode 100755
index 1e7d211..76d59ed
--- a/bench/bench.sh
+++ b/bench/bench.sh
@@ -8,6 +8,9 @@ for i in /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor; do
 done
 
 node sizes.js
-sudo nice -n -20 taskset -c 1 node speeds.js
+# We need sudo to use `nice` but want to keep using current `node`, so use explicit path in case sudo decides to ignore PATH.
+node_path="$(which node)"
+echo "Using Node.js at $node_path"
+sudo nice -n -20 taskset -c 1 "$node_path" speeds.js
 sudo chown -R "$USER:$USER" results
 node graph.js
diff --git a/bench/profile.sh b/bench/profile.sh
old mode 100644
new mode 100755