diff --git a/nixos/modules/tasks/filesystems.nix b/nixos/modules/tasks/filesystems.nix
index 994747601309..ea825667c34f 100644
--- a/nixos/modules/tasks/filesystems.nix
+++ b/nixos/modules/tasks/filesystems.nix
@@ -167,7 +167,7 @@ let
          else throw "No device specified for mount point ‘${fs.mountPoint}’.")
       + " " + escape (rootPrefix + fs.mountPoint)
       + " " + fs.fsType
-      + " " + builtins.concatStringsSep "," (fs.options ++ (extraOpts fs))
+      + " " + escape (builtins.concatStringsSep "," (fs.options ++ (extraOpts fs)))
       + " " + (optionalString (!excludeChecks)
         ("0 " + (if skipCheck fs then "0" else if fs.mountPoint == "/" then "1" else "2")))
       + "\n"