diff --git a/scripts/setup-spark.sh b/scripts/setup-spark.sh
index 2cbcf6e556b..26094182708 100755
--- a/scripts/setup-spark.sh
+++ b/scripts/setup-spark.sh
@@ -138,3 +138,9 @@ fi
 echo ""
 info "DGX Spark Docker configuration complete."
 info ""
+info "Next step: run 'nemoclaw onboard' to rebuild the sandbox image"
+info "with the updated Docker configuration."
+info ""
+info "If you already ran 'nemoclaw onboard' during initial setup, you"
+info "need to run it again — the sandbox image must be rebuilt with"
+info "cgroupns=host to work correctly on DGX Spark."