diff --git a/checks/dummy-inventory-test/legacy-module/shared.nix b/checks/dummy-inventory-test/legacy-module/shared.nix
index 11cf466b9..92b7418ca 100644
--- a/checks/dummy-inventory-test/legacy-module/shared.nix
+++ b/checks/dummy-inventory-test/legacy-module/shared.nix
@@ -27,8 +27,8 @@
     files.host-id.secret = false;
     files.generated-password.secret = true;
     script = ''
-      echo $RANDOM > $out/host-id
-      echo $RANDOM > $out/generated-password
+      echo $RANDOM > "$out"/host-id
+      echo $RANDOM > "$out"/generated-password
     '';
   };
 }
diff --git a/checks/installation/flake-module.nix b/checks/installation/flake-module.nix
index d563c023b..062486e86 100644
--- a/checks/installation/flake-module.nix
+++ b/checks/installation/flake-module.nix
@@ -127,7 +127,7 @@ in
         clan.core.vars.generators.test = {
           files.test.neededFor = "partitioning";
           script = ''
-            echo "notok" > $out/test
+            echo "notok" > "$out"/test
           '';
         };
         disko.devices = {