diff --git a/services/telegraf.nix b/services/telegraf.nix
index 63377170..5e8812f2 100644
--- a/services/telegraf.nix
+++ b/services/telegraf.nix
@@ -24,7 +24,7 @@
           token = "$TELEGRAF_TOKEN";
           organization = "default";
           bucket = "telegrafdb";
-          http_headers = "{'Authorization' = 'Token $TELEGRAF_TOKEN}'}";
+          http_headers = [ "{'Authorization' = 'Token $TELEGRAF_TOKEN}'}" ];
         };
       };
       inputs = {