diff --git a/examples/block-while-remote-file-exists.sh b/examples/block-while-remote-file-exists.sh
index 16dff62..2a9d611 100644
--- a/examples/block-while-remote-file-exists.sh
+++ b/examples/block-while-remote-file-exists.sh
@@ -6,10 +6,10 @@ set -eu -o pipefail
 while :; do
   result="$(ssh yodaNas 'ls stay-alive 2>&1')" || :
   case "${result}" in
-    *"No such file or directory")
+    *'No such file or directory')
       break
       ;;
-    "stay-alive")
+    'stay-alive')
       printf '%s\n' 'Delaying suspend due to stay-alive file.'
       ;;
     *)
diff --git a/hosts/yodaHedgehog/configuration.nix b/hosts/yodaHedgehog/configuration.nix
index 6c2b7cf..fff6be8 100644
--- a/hosts/yodaHedgehog/configuration.nix
+++ b/hosts/yodaHedgehog/configuration.nix
@@ -22,7 +22,7 @@
       ../../modules/btrbk
       ./btrbk-config.nix
       ../../modules/de-p1st-monitor.nix
-      #../../modules/spin-down-hdd.nix
+      ../../modules/spin-down-hdd.nix
 
       ../../modules/btrfs-scrub.nix
       ../../modules/btrfs-mount-options.nix
diff --git a/hosts/yodaHedgehog/host-specific.nix b/hosts/yodaHedgehog/host-specific.nix
index 916c12f..83b95fe 100644
--- a/hosts/yodaHedgehog/host-specific.nix
+++ b/hosts/yodaHedgehog/host-specific.nix
@@ -85,10 +85,10 @@ in
       while :; do
         result="$(ssh ${backup-source} 'ls ${stay-awake-file} 2>&1')" ||:
         case "''${result}" in
-          *"No such file or directory")
+          *'No such file or directory')
             break
             ;;
-          "${stay-awake-file}")
+          '${stay-awake-file}')
             printf '%s\n' 'Delaying suspend due to ${stay-awake-file} file.'
             ;;
           *)