diff --git a/nixos/modules/services/search/kibana.nix b/nixos/modules/services/search/kibana.nix
index 75871a9df949..43a63aa8fdc2 100644
--- a/nixos/modules/services/search/kibana.nix
+++ b/nixos/modules/services/search/kibana.nix
@@ -9,7 +9,7 @@ let
   lt6_6 = builtins.compareVersions cfg.package.version "6.6" < 0;
 
   cfgFile = pkgs.writeText "kibana.json" (builtins.toJSON (
-    (filterAttrsRecursive (n: v: v != null) ({
+    (filterAttrsRecursive (n: v: v != null && v != []) ({
       server.host = cfg.listenAddress;
       server.port = cfg.port;
       server.ssl.certificate = cfg.cert;