diff --git a/rwx/cmd/squashfs/__init__.py b/rwx/cmd/squashfs/__init__.py
index 3162b88..db603da 100644
--- a/rwx/cmd/squashfs/__init__.py
+++ b/rwx/cmd/squashfs/__init__.py
@@ -8,13 +8,11 @@ cmd.need("mksquashfs")
 def mksquashfs(input_root: str, output_file: str) -> None:
     """Make a SquashFS bootable image file."""
     ps.run(
-        [
-            "mksquashfs",
-            input_root,
-            output_file,
-            "-comp",
-            "zstd",
-            "-Xcompression-level",
-            str(18),
-        ]
+        "mksquashfs",
+        input_root,
+        output_file,
+        "-comp",
+        "zstd",
+        "-Xcompression-level",
+        str(18),
     )