diff --git a/README.md b/README.md
index 36e404f4..087b6eef 100644
--- a/README.md
+++ b/README.md
@@ -17,7 +17,7 @@ This build happens in a container for portability.
 ```bash
 pushd "${PROJECT_ROOT}/dpdk-sys"
 # Now build the sysroot
-./gen-sysroot/gen-sysroot.sh
+./gen-sysroot/gen-sysroot.sh debug
 ```
 
 > [!Warning]