diff --git a/kartei/tv/default.nix b/kartei/tv/default.nix
index 3c66f60f6..428e1c3b9 100644
--- a/kartei/tv/default.nix
+++ b/kartei/tv/default.nix
@@ -172,7 +172,7 @@ in {
           search.ni   60 IN A ${config.krebs.hosts.ni.nets.internet.ip4.addr}
           search.ni   60 IN AAAA ${config.krebs.hosts.ni.nets.internet.ip6.addr}
           krebsco.de. 60 IN MX 5 ni
-          krebsco.de. 60 IN TXT v=spf1 mx -all
+          krebsco.de. 60 IN TXT "v=spf1 mx -all"
           tv          300 IN NS ni
         '';
       };