diff --git a/services/telegraf.nix b/services/telegraf.nix
index 63f74d12..63377170 100644
--- a/services/telegraf.nix
+++ b/services/telegraf.nix
@@ -35,7 +35,7 @@
           report_active = false;
         };
         disk = {
-          ignore_fs = "['tmpfs', 'devtmpfs', 'devfs', 'iso9660', 'overlay', 'aufs', 'squashfs']";
+          ignore_fs = ["tmpfs" "devtmpfs" "devfs" "iso9660" "overlay" "aufs" "squashfs"];
         };
         diskio = {};
         kernel = {};