diff --git a/nixos/telperion/configuration.nix b/nixos/telperion/configuration.nix
index d6e3bcc..e285825 100644
--- a/nixos/telperion/configuration.nix
+++ b/nixos/telperion/configuration.nix
@@ -72,7 +72,7 @@
       # if request comes from older PXE ROM, chainload to iPXE (via TFTP)
       # also this hack sucks, but it works
       pxe-service=''
-      tag:#ipxe,x86PC,"PXE chainload to iPXE",undionly.kpxe"
+      tag:#ipxe,x86PC,"PXE chainload to iPXE",undionly.kpxe
       pxe-service=tag:ipxe,0,matchbox,http://10.1.1.57:8080/boot.ipxe
       '';
       # if request comes from iPXE user class, set tag "ipxe"