diff --git a/services/telegraf.nix b/services/telegraf.nix
index 0d2e7691..95dc11b4 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 = {};