diff --git a/auto-installer/installer.nix b/auto-installer/installer.nix
index 156505a..805f1e8 100644
--- a/auto-installer/installer.nix
+++ b/auto-installer/installer.nix
@@ -2,7 +2,7 @@
 
 {
   imports = [
-    modulesPath + "/installer/cd-dvd/installation-cd-minimal.nix"
+    "${modulesPath}/installer/cd-dvd/installation-cd-minimal.nix"
   ];
 
   networking.useDHCP = lib.mkDefault true;