diff --git a/metropolis/installer/test/testos/BUILD.bazel b/metropolis/installer/test/testos/BUILD.bazel
index 6eded96..8d5f267 100644
--- a/metropolis/installer/test/testos/BUILD.bazel
+++ b/metropolis/installer/test/testos/BUILD.bazel
@@ -17,7 +17,7 @@
 
 efi_unified_kernel_image(
     name = "kernel_efi",
-    cmdline = "loglevel=0 console=ttyS0 init=/init",
+    cmdline = "quiet console=ttyS0 init=/init",
     kernel = "//third_party/linux",
     verity = ":verity_rootfs",
 )