diff --git a/modules/gnome/hm.nix b/modules/gnome/hm.nix
index ff2f3f5d..2accc30c 100644
--- a/modules/gnome/hm.nix
+++ b/modules/gnome/hm.nix
@@ -39,7 +39,7 @@ with lib;
         let theme = import ./theme.nix args;
         in "${theme}/share/gnome-shell/gnome-shell.css";
       onChange = ''
-        if [ -x "$(command -v gnome-extensions)" ]; then
+        if [[ -x "$(command -v gnome-extensions)" ]]; then
           gnome-extensions disable user-theme@gnome-shell-extensions.gcampax.github.com
           gnome-extensions enable user-theme@gnome-shell-extensions.gcampax.github.com
         fi
diff --git a/modules/kde/hm.nix b/modules/kde/hm.nix
index dc948cd7..17a522b8 100644
--- a/modules/kde/hm.nix
+++ b/modules/kde/hm.nix
@@ -235,7 +235,7 @@ in {
     home.activation.stylixLookAndFeel = lib.hm.dag.entryAfter [ "writeBoundary" ] ''
       globalPath() {
         for dir in /run/current-system/sw/bin /usr/bin /bin; do
-          if [ -f "$dir/$1" ]; then
+          if [[ -f "$dir/$1" ]]; then
             echo "$dir/$1"
             break
           fi
@@ -243,12 +243,12 @@ in {
       }
 
       wallpaperImage="$(globalPath plasma-apply-wallpaperimage)"
-      if [ -n "$wallpaperImage" ]; then
+      if [[ -n "$wallpaperImage" ]]; then
         "$wallpaperImage" ${themePackage}/share/wallpapers/stylix
       fi
 
       lookAndFeel="$(globalPath plasma-apply-lookandfeel)"
-      if [ -n "$lookAndFeel" ]; then
+      if [[ -n "$lookAndFeel" ]]; then
         "$lookAndFeel" --apply stylix
       fi
     '';