diff --git a/lib/images/linux/customizeImage.nix b/lib/images/linux/customizeImage.nix
index a87b0f2..9d04774 100644
--- a/lib/images/linux/customizeImage.nix
+++ b/lib/images/linux/customizeImage.nix
@@ -38,6 +38,7 @@
       [ -n "${diskSize}" ] && qemu-img resize ${resultImg} ${diskSize}
 
       # run script inside image using virt-customize
+      export LIBGUESTFS_PATH="${pkgs.libguestfs-with-appliance}/lib/guestfs"
       export LIBGUESTFS_APPEND="ipv6.disable=1"
 
       ${pkgs.guestfs-tools}/bin/virt-customize \
diff --git a/lib/images/windows/helpers/customizeImage.nix b/lib/images/windows/helpers/customizeImage.nix
index 19758b9..a4a2a00 100644
--- a/lib/images/windows/helpers/customizeImage.nix
+++ b/lib/images/windows/helpers/customizeImage.nix
@@ -137,7 +137,8 @@
       mv ${resultImg} $out
     '';
   builtImage = pkgs.runCommand customImageName ({
-    nativeBuildInputs = with pkgs; [ qemu perl guestfs-tools ];
+    nativeBuildInputs = with pkgs; [ qemu perl guestfs-tools libguestfs-with-appliance ];
+    LIBGUESTFS_PATH = "${pkgs.libguestfs-with-appliance}/lib/guestfs";
     requiredSystemFeatures = [ "kvm" ];
   } // lib.optionalAttrs impure { __noChroot = true; }) builderCommand;
   in