diff --git a/services/telegraf.nix b/services/telegraf.nix
index 95dc11b4..f433806a 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 = {};