diff --git a/docs/troubleshooting.md b/docs/troubleshooting.md
index 040d082cee5..cd5eccda0d5 100644
--- a/docs/troubleshooting.md
+++ b/docs/troubleshooting.md
@@ -367,7 +367,7 @@ ENV PUPPETEER_SKIP_CHROMIUM_DOWNLOAD=true \
 RUN yarn add puppeteer@10.0.0
 
 # Add user so we don't need --no-sandbox.
-RUN addgroup -S pptruser && adduser -S -g pptruser pptruser \
+RUN addgroup -S pptruser && adduser -S -G pptruser pptruser \
     && mkdir -p /home/pptruser/Downloads /app \
     && chown -R pptruser:pptruser /home/pptruser \
     && chown -R pptruser:pptruser /app