diff --git a/src/bin/composefs-setup-root.rs b/src/bin/composefs-setup-root.rs
index d756061b..17d40798 100644
--- a/src/bin/composefs-setup-root.rs
+++ b/src/bin/composefs-setup-root.rs
@@ -74,7 +74,7 @@ struct Args {
 
     #[arg(
         long,
-        default_value = "/usr/lib/ostree/prepare-root.conf",
+        default_value = "/usr/lib/composefs/setup-root-conf.toml",
         help = "Config path (for testing)"
     )]
     config: PathBuf,