diff --git a/hardware/alien/default.nix b/hardware/alien/default.nix
index 89f3648..8e3eb20 100755
--- a/hardware/alien/default.nix
+++ b/hardware/alien/default.nix
@@ -38,6 +38,7 @@
       options = [
         "fmask=0022"
         "dmask=0022"
+        "umask=0077"
       ];
     };
 
diff --git a/hardware/peach/default.nix b/hardware/peach/default.nix
index 54227e6..b3b57a2 100644
--- a/hardware/peach/default.nix
+++ b/hardware/peach/default.nix
@@ -59,6 +59,7 @@
       options = [
         "fmask=0022"
         "dmask=0022"
+        "umask=0077"
       ];
     };
   };