diff --git a/modules/installer/cd-dvd/installation-cd-base.nix b/modules/installer/cd-dvd/installation-cd-base.nix
index 76ac3b5d3cc9..b45a5cdb6e0e 100644
--- a/modules/installer/cd-dvd/installation-cd-base.nix
+++ b/modules/installer/cd-dvd/installation-cd-base.nix
@@ -77,7 +77,7 @@ in
   # ISO naming.
   isoImage.isoName = "nixos-${config.system.nixosVersion}-${pkgs.stdenv.system}.iso";
     
-  isoImage.volumeID = "NIXOS_INSTALLATION_CD_${config.system.nixosVersion}";
+  isoImage.volumeID = "NIXOS_INSTALL_CD_${config.system.nixosVersion}";
   
   # Use Linux 2.6.29.
   boot.kernelPackages = pkgs.kernelPackages_2_6_29;